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Why do Flowers Exist? (Gymnosperms & Angiosperms): Crash Course Botany #9

Video vocabulary

own

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US / əʊn /

UK / on /

A1
  • adjecitve
  • Belong to oneself
  • determiner
  • Yours, his, hers, etc.; not belonging to another
  • pronoun
  • (Something) belong to myself
  • verb
  • To have something as your property

place

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US / pleɪs /

UK / ples /

A1
  • noun
  • Particular location, area or region
  • verb
  • To put someone in a particular type of situation
  • To put something in a certain location or position

meteoric

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US / ˌmi:tiˈɒrɪk /

UK / ˌmi:tiˈɔ:rɪk /

B2
  • adjecitve
  • Concerning atmospheric phenomena

clever

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US / 'klevə(r) /

UK / ˈklɛvɚ /

A1
  • adjecitve
  • Funny in a way that shows intelligence
  • Showing intelligence; quick to understand or learn

touch

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US / tʌtʃ /

UK / tʌtʃ /

A1
  • noun
  • Certain way of doing that makes something special
  • A small amount of something
  • Feeling of a surface
  • verb
  • To affect feelings, especially by causing sympathy
  • To be next to each other with no space between
  • To get involved with (used in negative)
  • To feel an object with your fingers, etc.

she

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US / ʃɪ /

UK / ʃi /

A1
  • pronoun
  • Female person or animal mentioned before
  • (Refers to female person mentioned before)

right

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US / raɪt /

UK / raɪt /

A1
  • adjecitve
  • Correct or true
  • The south side of you looking at the rising sun
  • adverb
  • Exactly in a place or time
  • Being appropriate for a particular event
  • In a straight or direct manner
  • noun
  • Something you are legally or morally allowed to do
  • Ideal of what is just and good
  • Political view based on conservatism
  • verb
  • To fix something previously wrong or unjust
  • To make upright, as a boat that has turned over

ride

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US / raɪd /

UK / raɪd /

A1
  • noun
  • Machine at an amusement park for riding on for fun
  • Trip on a bicycle or a horse
  • verb
  • To travel in a particular vehicle as a passenger
  • To sit on and control a horse or vehicle

resistance

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US / rɪ'zɪstəns /

UK / rɪˈzɪstəns /

A2
  • noun
  • Force that stops or slows movement of something
  • Refusal to accept something new or different

essentially

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US / ɪˈsenʃəli /

UK / ɪˈsenʃəli /

A2
  • adverb
  • Basically; (said when stating the basic facts)

endanger

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US / ɪn'deɪndʒə(r) /

UK / ɛnˈdendʒɚ /

B1
  • verb
  • To bring a person/thing into a dangerous situation

baby

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US / ˈbeɪbi /

UK / ˈbeɪbi /

A2
  • adjecitve
  • Small in size; smaller than usual
  • noun
  • A very young child, who cannot yet speak
  • verb
  • To treat someone as if they were newly born

vein

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US / veɪn /

UK / ven /

B1
  • noun
  • Tube that returns blood from the body to the heart
  • Mood or particular turn of mind
  • Thin line of something that has a different color

thrive

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US / θraɪv /

UK / θraɪv /

B2
  • verb
  • To be or become healthy or successful

that

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US / ðæt /

UK / ðæt, ðət /

A1
  • adjecitve
  • The person or thing being talked about
  • Used to identify something both the speakers know
  • adverb
  • Used to reinforce adjectives and adverbs
  • To such a degree
  • conjunction
  • Used to connect a noun clause
  • Used to introduce an adverbial clause
  • Used to introduce a noun clause
  • determiner
  • Used as a noun to refer to something
  • pronoun
  • Referring an object far away
  • Used to refer to the relative pronoun ‘which’

what

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US / wɒt /

UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /

A1
  • pronoun
  • Thing or things that; the same kind as
  • Used to emphasize something you are about to say
  • adjecitve
  • Used to refer to a particular amount, or number
  • Used to place emphasis on a particular quality
  • adverb
  • To a certain degree
  • determiner
  • Question words used for asking for information
  • exclamation
  • Used to express excitement, shock, or surprise
  • Used to ask people to repeat something they said

stinky

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US / ˈstɪŋki /

UK / ˈstɪŋki /

A1
  • other

site

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US / saɪt /

UK / saɪt /

A2
  • noun
  • Place that is reserved for a particular activity
  • Location of building work
  • Location of something
  • Place where something of special interest happened
  • Website
  • verb
  • To place something in a particular position, area

like

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US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

migrate

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US / maɪˈgreɪt /

UK / ˈmaɪgreɪt /

B1
  • verb
  • To move from one country or place to live or work

different

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US / ˈdɪfrənt /

UK / ˈdɪfrənt /

A1
  • adjecitve
  • Not of the same kind; unlike other things

eventually

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US / ɪˈventʃuəli /

UK / ɪˈvɛntʃuəli /

A2
  • adverb
  • After a long time; after many attempts; in the end

even

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US / 'i:vn /

UK / ˈivən /

A1
  • adjecitve
  • Being equal in influence, power, possibility etc.
  • Being divided equally or fairly
  • (Of teams/contest) with similar chances of success
  • Smooth, level, or regular
  • Can be divided by 2; ending in 2, 4, 6, 8, or 0
  • At a regular, equally steady manner
  • Remaining steady and unchanging
  • adverb
  • (When this is surprising) as well; too
  • (Used to compare two things/stress the difference)
  • verb
  • To make something level; to flatten
  • To make something equal

about

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US / ə'baʊt /

UK / əˈbaʊt /

A1
  • adverb
  • To be ready to; going to
  • Nearly; approximately; roughly
  • Near; next to; close to
  • In every direction; in the area of
  • preposition
  • Concerning or of (a topic)

typical

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US / ˈtɪpɪkl /

UK / ˈtɪpɪkəl /

A2
  • adjecitve
  • Normal; usual; expected

similarly

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US / ˈsɪmələli /

UK / ˈsɪmələrli /

A2
  • adverb
  • In a way almost the same as something else

each

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US / i:tʃ /

UK / itʃ /

A1
  • determiner
  • Every one of two or more things
  • pronoun
  • Per one person or thing

microscope

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US / ˈmaɪkrəskəʊp /

UK / ˈmaɪkrəskoʊp /

B1
  • noun
  • Scientific device making small things look bigger

method

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US / 'meθəd /

UK / ˈmɛθəd /

A2
  • noun
  • (Organized and planned) way of doing something

happen

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US / 'hæpən /

UK / ˈhæpən /

A1
  • verb
  • To take place or occur

decongestant

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US / ˌdi:kənˈdʒestənt /

UK / ˌdikənˈdʒɛstənt /

A1
  • noun
  • Drug that decreases pulmonary congestion

diversity

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US / daɪ'vɜ:sətɪ /

UK / dɪˈvə:sɪti, daɪ- /

B1
  • noun
  • Having a range of different races, ideas etc.

city

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US / 'sɪtɪ /

UK / ˈsɪti /

A1
  • noun
  • Area with many buildings, roads and people

cell

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US / sel /

UK / sɛl /

A2
  • noun
  • Smallest unit of living things in biology
  • Group of people - often from a secret organization
  • Prisoner's room in a jail
  • Shortened form of 'cellphone'

wet

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US / wet /

UK / wɛt /

A1
  • adjecitve
  • Concerning a bar that serves or sells alcohol
  • Having or experiencing a great deal of rain
  • Containing water or liquid; not dry
  • verb
  • To accidentally pee in clothes or a bed

array

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US / əˈreɪ /

UK / ə'reɪ /

B2
  • noun
  • A regular order or arrangement of things
  • verb
  • To arrange things in a regular order

determine

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US / dɪ'tɜ:mɪn /

UK / dɪˈtɚmɪn /

A2
  • verb
  • To control exactly how something will be or act
  • To establish the facts about; discover

head

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US / hed /

UK / hɛd /

A1
  • noun
  • Counter for the number of cattle
  • Natural mental ability or intelligence
  • Leader or person with the greatest authority
  • Mind; mental ability; mental state
  • Side of a coin with a head on it
  • Top part of your body with eyes and a mouth
  • Starting point of something, e.g. a river
  • verb
  • To hit a ball with your head in a game
  • To be first or at the front or top (e.g. a list)
  • To travel or move toward a particular place; To go in a particular direction
  • To become the leader of something
  • To lead or be responsible for something

send

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US / send /

UK / sɛnd /

A1
  • verb
  • To cause to behave or respond in a particular way
  • To cause mail or packages to go to another place
  • To move something quickly in a particular way
  • To give information or greetings to someone

success

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US / sək'ses /

UK / səkˈsɛs /

A2
  • noun
  • Achievement of a desired purpose or goal
  • A successful person; one who achieved their aims

special

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US / 'speʃl /

UK / ˈspɛʃəl /

A1
  • adjecitve
  • Being additional or extra
  • Different, better or greater than normal
  • noun
  • Heavily discounted sales item

ask

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US / ɑ:sk /

UK / æsk /

A1
  • verb
  • To say to someone that you want something

grow

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US / ɡrəʊ /

UK / ɡro /

A1
  • verb
  • To get bigger and more mature; make plants do this
  • To improve; to develop better skills over time
  • To develop and become bigger or taller over time

land

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US / lænd /

UK / lænd /

A1
  • noun
  • Region or country
  • Earth; the ground
  • verb
  • To arrive or cause a boat to arrive at the shore
  • To obtain or get something that you wanted
  • To (cause to) come down to the ground safely
  • To cause to arrive in a specific place or state

tour

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US / tʊə(r) /

UK / tʊr /

A2
  • noun
  • A trip to several places to perform a show
  • A journey to visit several places for pleasure
  • verb
  • To travel to several places to perform a show
  • To visit several places for pleasure

since

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US / sɪns /

UK / sɪns /

A1
  • adverb
  • At a point before the present time
  • conjunction
  • For this reason; because
  • preposition
  • From the time in the past that

start

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US / stɑ:t /

UK / stɑrt /

A1
  • noun
  • First time or place that a thing exists; beginning
  • First opportunity to achieve something, e.g. a job
  • Sudden action or movement because you are scared
  • other
  • Beginning of something in place or time
  • verb
  • To do, be or happen for the first time; begin
  • To turn something on

unique

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US / jʊ'ni:k /

UK / juˈnik /

A2
  • adjecitve
  • Unlike other things; being the only one like it

well

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US / wel /

UK / wɛl /

A1
  • adjecitve
  • Being in a fortunate, good condition or state
  • Healthy and in good condition
  • adverb
  • In an acceptable, proper, or successful manner
  • In a complete, total, or full manner
  • A great and considerable degree
  • In a successful way, in a good or satisfactory way
  • exclamation
  • Used to begin or continue a particular statement
  • Used to show you want to start saying something
  • Used to express that you are waiting for a reply
  • You say this to change the topic of a conversation
  • Used to indicate you are making a final remark
  • noun
  • Long deep hole in the ground to get water
  • verb
  • To cause your eyes to fill with tears

amazing

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US / ə'meɪzɪŋ /

UK / ə'meɪzɪŋ /

A2
  • adjecitve
  • Surprising in a pleasing way
  • verb
  • To cause wonder; to surprise completely

branch

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US / brɑ:ntʃ /

UK / bræntʃ /

A2
  • noun
  • Part of a family related to the same members
  • Part of organization with a specific function
  • Part of a tree growing outward from the trunk
  • One of several streams combining to create a river
  • Local office or store of a bank or large company
  • (Often secret) group or subgroup of a religion
  • Specific area of knowledge or study
  • verb
  • To separate away from the main part

pod

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US / pɒd /

UK / pɑ:d /

B2
  • noun
  • Seed container that grows on plants

water

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US / 'wɔ:tə(r) /

UK / ˈwɔtɚ, ˈwɑtɚ /

A1
  • noun
  • Clear liquid that forms the seas, rivers and rain
  • Large area such as an ocean or sea
  • verb
  • (Of the eyes) to produce tears
  • (Mouth) to become wet at the thought of nice food
  • To pour liquids onto a plant to keep it alive

green

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US / gri:n /

UK / ɡrin /

A1
  • adjecitve
  • Color of young leaves
  • Covered with vegetation, e.g. grass
  • Concerned about protecting the environment
  • The color of young leaves
  • Lacking in experience/knowledge due to being young
  • Being not fully grown or ripe, as in fruit
  • noun
  • Large grassy area
  • used as a part of a name of a place (UK)

nutrient

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US / ˈnju:triənt /

UK / ˈnutriənt /

B1
  • noun
  • A chemical living things needs to be healthy

news

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US / nju:z /

UK / nu:z /

A1
  • noun
  • Broadcast on radio or TV about recent events
  • Information about recent events

tasty

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US / ˈteɪsti /

UK / ˈtesti /

A2
  • adjecitve
  • Good tasting; having a lot of flavor

crucial

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US / 'kru:ʃl /

UK / ˈkruʃəl /

B1
  • adjecitve
  • Extremely important or necessary

dioxide

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US / daɪˈɒksaɪd /

UK / daɪˈɑksaɪd /

B2
  • noun
  • An oxide containing two oxides per molecule

discover

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US / dɪˈskʌvə(r) /

UK / dɪˈskʌvɚ /

A2
  • verb
  • To find something new that was not known before

room

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US / ru:m /

UK / rum, rʊm /

A1
  • noun
  • All of the people inside a particular room
  • Part of building enclosed by walls, e.g. kitchen
  • Opportunity to exist, happen, or be true
  • verb
  • To share a home with someone

between

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US / bɪˈtwi:n /

UK / bɪˈtwin /

A1
  • preposition
  • From one person, thing, or place, to another
  • In the space that separates two objects
  • Among two or more people who share something

everything

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US / 'evrɪθɪŋ /

UK / ˈɛvriˌθɪŋ /

A1
  • pronoun
  • All of the things mentioned

devise

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US / dɪ'vaɪz /

UK / dɪˈvaɪz /

B1
  • verb
  • To think of and plan something

herbivore

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US / ˈhɜ:bɪvɔ:(r) /

UK / ˈɜ:rbɪvɔ:(r) /

C1
  • noun
  • Any animal that feeds chiefly on grass and plants

cozy

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US / 'kəʊzɪ /

UK / ˈkozi /

B1
  • adjecitve
  • Comfortable, warm, pleasant, and often, small

gradually

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US / ˈgrædʒuəli /

UK / ˈɡrædʒʊəlɪ /

B1
  • adverb
  • Occurring in a slow manner over a period of time

the

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US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

let

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US / let /

UK / lɛt /

A1
  • verb
  • To allow someone to do something
  • Introducing a suggestion to do something together
  • To rent a house, etc. to others

little

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US / 'lɪtl /

UK / ˈlɪtl /

A1
  • adjecitve
  • Being short in length of time
  • Not great in size, amount, or degree; small
  • Being very young or younger than others
  • adverb
  • By an amount or degree that is not very much
  • Not often; rarely
  • noun
  • A person's name

might

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US / maɪt /

UK / maɪt /

A1
  • other
  • Used to politely request an action
  • Used to express that something could happen
  • Power, strength, force or influence

big

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US / bɪɡ /

UK / bɪɡ /

A1
  • adjecitve
  • Popular
  • Serious
  • Large

this

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US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

may

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US / meɪ /

UK / me /

A1
  • noun
  • 5th month of the year
  • other
  • Used to express a desire
  • Expresses permission, possibility or probability
  • Used to show that a thing could be true

hitch

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US / hɪtʃ /

UK / hɪtʃ /

B2
  • noun
  • Small problem that makes things more difficult
  • verb
  • To ask for and get (a ride in someone's car)
  • To attach a trailer to a car; tow

fruit

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US / fru:t /

UK / frut /

A1
  • noun
  • Result or product of something
  • Food that grows on a tree or bush, usually sweet
  • verb
  • To grow e.g. apples, bananas, as a plant or a tree

free

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US / fri: /

UK / fri /

A1
  • adjecitve
  • Living, happening without being controlled
  • Costing no money
  • Not working; not busy
  • verb
  • To release (e.g. bird) from a cage or prison

consist

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US / kən'sɪst /

UK / kənˈsɪst /

A2
  • verb
  • To have as an essential, necessary or main part

witch

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US / wɪtʃ /

UK / wɪtʃ /

B2
  • noun
  • Woman believed to have magical powers
  • Mean and ugly old woman

unpack

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US / ˌʌnˈpæk /

UK / ʌnˈpæk /

B1
  • verb
  • To try to understand by thinking about something
  • To take things out of a suitcase

transport

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US / ˈtrænspɔ:t /

UK / ˈtrænspɔ:rt /

A2
  • noun
  • Very strong uncontrollable emotion, e.g. delight
  • Vehicle used to take soldiers to other places
  • verb
  • To carry things from one place to another
  • To cause to feel you are in a previous time

exquisite

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US / ɪkˈskwɪzɪt /

UK / ˈɛkskwɪzɪt, ɪkˈskwɪzɪt /

B2
  • adjecitve
  • Being very sensitive or detailed, e.g. of taste

fertilize

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US / ˈfɜ:təlaɪz /

UK / ˈfɜ:rtəlaɪz /

B1
  • verb
  • To make pregnant; to put sperm in an egg
  • To add chemicals to produce larger, better plants

fern

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US / fɜ:n /

UK / fɜ:rn /

B2
  • noun
  • Type of plant with long, thin leaves

ecosystem

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US / ˈi:kəʊsɪstəm /

UK / ˈɛkoˌsɪstəm, ˈiko- /

B1
  • noun
  • Types of plants and animals in an specific area

cuisine

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US / kwɪˈzi:n /

UK / kwɪˈzin /

B1
  • noun
  • Certain style or technique of cooking

able

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US / 'eɪbl /

UK / ˈebəl /

A2
  • adjecitve
  • Skilled; good at something
  • Having the ability to do something

adapt

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US / ə'dæpt /

UK / əˈdæpt /

B1
  • verb
  • To change something for a different function
  • To change something to fit or suit a new purpose

you

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US / jʊ /

UK / ju /

A1
  • pronoun
  • Person someone is speaking or writing to
  • Person or people in general

year

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US / jə: /

UK / jɪr /

A1
  • noun
  • Unit of time equal to 12 months or 365 or 366 days
  • Used to refer to the age of a person

sepal

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US / ˈsepl /

UK / ˈsipəl /

A1
  • noun
  • One of the parts that form the calyx of a flower

kind

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US / kaɪnd /

UK / kaɪnd /

A1
  • adjecitve
  • In a caring and helpful manner
  • friendly and considerate
  • noun
  • One type of thing

live

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US / lɪv /

UK / liv /

A1
  • adjecitve
  • Being broadcast as events happen, not recorded
  • Carrying electric current; able to give a shock
  • Glowing because burning; hot
  • Not yet killed (for food)
  • adverb
  • (Music, drama) as it is performed
  • verb
  • To be alive
  • To experience a particular type of life
  • To make your home in a house or town

how

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US / haʊ /

UK / haʊ /

A1
  • adjecitve
  • To what degree? in what amount?
  • adverb
  • (Used to explain the way to do something)
  • exclamation
  • For what purpose or reason?
  • (Used to ask someone or something's condition)

also

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US / 'ɔ:lsəʊ /

UK / ˈɔlso /

A1
  • adverb
  • In addition; too; in a similar way

colleague

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US / 'kɒli:ɡ /

UK / ˈkɑlˌiɡ /

A2
  • noun
  • Person you work or cooperate with

than

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US / ðən /

UK / ðən /

A1
  • conjunction
  • Used to compare two things that are not equal

wheat

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US / wi:t /

UK / hwit, wit /

B1
  • noun
  • A kind of grain that is used to make flour

turn

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US / tɜ:n /

UK / tɚn /

A1
  • noun
  • Place where changing of direction happens
  • Your time or chance to perform a duty
  • Your chance to play or do in say a game
  • Unexpected change, as in the weather
  • verb
  • To become (a particular age)
  • To become a different quality, color, etc.
  • To change the direction of something, e.g. a car
  • To move in an opposite direction or position
  • To shape metal with a spinning tool

scent

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US / sent /

UK / sɛnt /

B1
  • noun
  • Pleasant smell, as of flowers or perfume
  • verb
  • To become aware of the presence of a smell, etc.
  • To add smell to something

phone

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US / fəʊn /

UK / foʊn /

A2
  • noun
  • Machine used to talk to someone who is far away
  • verb
  • To talk to someone using a telephone

other

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US / 'ʌðə(r) /

UK / ˈʌðər /

A1
  • adjecitve
  • A thing different from that mentioned
  • determiner
  • (Something) else; not the first (one)
  • pronoun
  • Being the one and only thing of that category

maximize

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US / ˈmæksɪmaɪz /

UK / ˈmæksəˌmaɪz /

B1
  • verb
  • To make as large or great as possible

rock

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US / rɒk /

UK / rɑk /

A1
  • noun
  • Type of popular music with a strong, loud beat
  • Strong, tough person who can be relied upon
  • Big stone; hard, solid substance forming mountains
  • verb
  • To be greatly upset by something, e.g. a death
  • To be extremely effective or pleasing
  • To play, sing along with, or dance to heavy music
  • To move back and forth or from side to side

patreon

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US / 'peɪʃənts /

UK / 'peɪʃənts /

A1

open

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US / 'əʊpən /

UK / ˈopən /

A1
  • adjecitve
  • Available for use; accessible
  • Not being hidden; available for others to see
  • Being available for customers to enter or use
  • Allowing everyone to use or take part in
  • Not secret anymore
  • Not closed or shut
  • Willing to accept new ideas and thoughts
  • noun
  • Name for a tennis or golf competition
  • verb
  • To make accessible or able to be used, e.g. road
  • To start the activities or services of a business
  • To make a space or hole appear in something
  • To move or change so that it is no longer closed
  • To start something, e.g. a new business

one

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US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

into

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US / 'ɪntə /

UK / ˈɪntu /

A1
  • preposition
  • Moving or going inside something
  • In the same direction as; in the direction of
  • So as to become; taking the state of

flourish

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US / 'flʌrɪʃ /

UK / ˈflɚrɪʃ, ˈflʌr- /

B2
  • noun
  • Fancy addition or decoration
  • verb
  • To show and direct attention by waving something
  • To add a fancy addition or decoration
  • To be healthy or successful

extract

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US / 'ekstrækt /

UK / ɪkˈstrækt /

B1
  • noun
  • Essential ingredient of a natural thing
  • Part taken from a longer written work
  • verb
  • To get a substance out of a plant, etc.
  • To get a person to share secret information
  • To remove something by pulling or cutting

valuable

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US / ˈvæljuəbl /

UK / ˈvæljuəbəl, ˈvæljə- /

B1
  • adjecitve
  • Being useful or important
  • Being worth a lot of money

sperm

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US / spɜ:m /

UK / spə:m /

C2
  • noun
  • Cell produced by men and needed for reproduction

specific

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US / spəˈsɪfɪk /

UK / spɪˈsɪfɪk /

A2
  • adjecitve
  • Precise; particular; just about that thing
  • Concerning one particular thing or kind of thing

giant

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US / 'dʒaɪənt /

UK / ˈdʒaɪənt /

A2
  • adjecitve
  • Very large, or much bigger than other things
  • noun
  • Tall, large, and powerful human-like creatures
  • Very successful, powerful person or organization

answer

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US / 'ɑ:nsə(r) /

UK / ˈænsɚ /

A1
  • noun
  • Reply to a question someone asks
  • Solution to a problem or test question
  • verb
  • To reply to a question someone asks
  • To solve a test question or a problem

broad

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US / brɔ:d /

UK / brɔd /

A2
  • adjecitve
  • General; not detailed
  • Wide; from the shorter two sides to the other

safely

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US / ˈseɪfli /

UK / ˈseflɪ /

A1
  • adverb
  • Out of danger

refine

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US / rɪ'faɪn /

UK / rɪˈfaɪn /

B1
  • verb
  • To change slightly in order to improve it
  • To narrow down your search to a smaller number
  • To make a liquid cleaner by removing something

nest

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US / nest /

UK / nɛst /

B1
  • noun
  • Home, e.g. of twigs, made by a bird, insect etc.
  • Things designed to fit together
  • Place where you feel secure; home or own room
  • verb
  • To create or live in a nest
  • To fit together, inside or around each other

ones

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US / wʌnz /

UK / wʌnz /

A1
  • number
  • Number 1, a single person or thing

marie

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US / mɑ:'sel /

UK / mɑ:'sel /

A1

make

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US / meɪk /

UK / mek /

A1
  • noun
  • Product made by a particular company; brand
  • verb
  • To arrange or prepare something e.g. dinner
  • To get to (a place) on time
  • To gain the status of (teacher, lawyer, etc.)
  • To create something by putting things together
  • To earn a certain amount of money at a job
  • To cause or force a person to do something
  • To cause something to happen or be formed

forest

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US / 'fɒrɪst /

UK / ˈfɔrɪst, ˈfɑr- /

A1
  • noun
  • Large area with many trees

efficient

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US / ɪˈfɪʃnt /

UK / ɪˈfɪʃənt /

A2
  • adjecitve
  • Able to produce results without waste

where

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US / hwɛə /

UK / hwɛr, wɛr /

A1
  • conjunction
  • At or in the place which
  • In whatever place
  • pronoun
  • Word you use to ask the location of something

staggering

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US / ˈstægərɪŋ /

UK / ˈstæɡərɪŋ /

B2
  • adjecitve
  • Causing amazement; unbelievable
  • verb
  • To greatly surprise someone

tree

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US / tri: /

UK / tri /

A1
  • noun
  • Tall green plants in a forest

tube

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US / tju:b /

UK / tub,tjub /

B1
  • noun
  • Plastic or metal container for soft substances
  • Long hollow pipe used to hold or liquids or gases

quarry

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US / ˈkwɒri /

UK / ˈkwɔ:ri /

B2
  • noun
  • Large pit in the earth where stone is mined
  • Animal that is hunted
  • verb
  • To dig for minerals in an open mine

leave

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US / li:v /

UK / liv /

A1
  • noun
  • Permission to do something
  • Vacation time; time off work
  • verb
  • To go away from; depart
  • To gift property to someone after you die
  • To allow something to continue happening
  • To let something remain unused or available
  • To let something or someone remain somewhere

pollution

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US / pəˈlu:ʃn /

UK / pəˈluʃən /

B1
  • noun
  • Dangerous substances released into an environment

inaccessible

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US / ˌɪnækˈsesəbl /

UK / ˌɪnækˈsɛsəbəl /

A2
  • adjecitve
  • Difficult or impossible to get or get into

far

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US / fɑ:(r) /

UK / fɑr /

A1
  • adjecitve
  • A long way away
  • Being a long way away
  • adverb
  • To a large degree or extent

double

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US / 'dʌbl /

UK / ˈdʌbəl /

A2
  • adjecitve
  • Concerning or intended for use by two people
  • Two times the amount or degree; twice
  • Made of two parts that are the same, similar
  • noun
  • Person that is exactly like someone else
  • verb
  • To be used for two functions at the same time
  • To make or become twice as much

call

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US / kɔ:l /

UK / kɔl /

A1
  • noun
  • A order or request for action
  • The sound an animal makes, often when in danger
  • A correct prediction, e.g. a decision in a game
  • A short visit to a place or person
  • A decision by a referee or umpire in a game
  • verb
  • To make a request or order for action
  • (Animal) to make sounds to warn of danger
  • To announce the date of an election
  • To make a judgment about something
  • To give someone or something a name
  • To guess in advance the result or outcome
  • To visit a place or person for a short time
  • To phone someone
  • To speak, announce or shout in a loud voice

think

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US / θɪŋk /

UK / θɪŋk /

A1
  • verb
  • To have an idea about something without certainty
  • To have an idea, opinion or belief about something

studio

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US / 'stju:dɪəʊ /

UK / ˈstudio, ˈstju- /

A2
  • noun
  • Place for painting, broadcasting, etc.

particular

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US / pəˈtɪkjələ(r) /

UK / pɚˈtɪkjəlɚ, pəˈtɪk- /

B2
  • adjecitve
  • One specific (one)
  • Having firm ideas about what is desirable
  • Being special or more than is typical

layer

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US / ˈleiə /

UK / ˈleɚ /

B1
  • noun
  • One of several sheets of a material or object
  • verb
  • To put things one on top of another

local

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US / ˈləʊkl /

UK / ˈloʊkl /

A2
  • adjecitve
  • Relating to a particular area, city, or town
  • noun
  • Bus or train, that stops at most stations
  • People who live in the area being discussed
  • The pub you most frequently go to

help

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US / help /

UK / hɛlp /

A1
  • noun
  • Something given to enable a person to do something
  • Assistance given to someone in need
  • Someone who makes something easier or possible
  • verb
  • To act to enable a person to do something; assist
  • To make something better or less difficult

come

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US / kʌm /

UK / kʌm /

A1
  • verb
  • To arrive at a place
  • (Of mail) to be delivered
  • To move toward someone; go with someone
  • To reach a certain point or state

cedar

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US / 'si:də(r) /

UK / ˈsidɚ /

A1
  • noun
  • Tall tree that retains needle-like leaves all year

sometimes

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US / ˈsʌmtaɪmz /

UK / ˈsʌmˌtaɪmz /

A1
  • adverb
  • Only at certain times; occasionally

ton

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US / tʌn /

UK / tʌn /

A2
  • noun
  • Unit of weight; 907 kilograms (US); 1016 (UK)

hey

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US / heɪ /

UK / he /

A1
  • exclamation
  • What you say when you want someone's attention

environment

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US / ɪn'vaɪrənmənt /

UK / ɛnˈvaɪrənmənt, -ˈvaɪən- /

A1
  • noun
  • Natural world in which plants and animals live
  • The entire surrounding conditions of something

complex

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US / 'kɒmpleks /

UK / kəmˈplɛks, ˈkɑmˌplɛks /

A2
  • adjecitve
  • Not being simple; having many parts or aspects
  • noun
  • Group of buildings all used for the same purpose
  • Psychological issue regarding self-image

bird

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US / bɜ:d /

UK / bɜ:rd /

A1
  • noun
  • Animal with feathers that uses wings to fly

another

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US / əˈnʌðə(r) /

UK / əˈnʌðɚ /

A1
  • adjecitve
  • One more, but not this
  • determiner
  • One more added
  • pronoun
  • One more (thing)

soybeans

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US / ˈsɔɪbiːnz /

UK / ˈsɔɪˌbinz /

C2
  • other
  • Edible seed widely used to make sauce, in cooking

typically

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US / ˈtɪpɪkli /

UK / ˈtɪpɪklɪ /

B1
  • adverb
  • In a normal or usual way

rather

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US / 'rɑ:ðə(r) /

UK / ˈræðɚ, ˈrɑðɚ /

A1
  • adverb
  • Somewhat; fairly; not that much

keep

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US / ki:p /

UK / kip /

A1
  • noun
  • Large, strong tower in the middle of a castle
  • Money spent on you so you can live in a place
  • verb
  • To continue doing something; not to stop
  • To stop balls going in a goal in sports
  • To not give back or return something
  • (Of food) to not spoil or not rot
  • To take possession of something to own, e.g. a pet
  • To have and continue to hold something
  • To do something that you have promised or agreed
  • To stay in a certain place or condition
  • To maintain the rules

forever

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US / fər'evə(r) /

UK / fɔrˈɛvɚ, fə- /

B1
  • adverb
  • For all future time; in the future

dominance

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US / 'dɒmɪnəns /

UK / ˈdɑmənəns /

B1
  • noun
  • Having more power, success than others

until

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US / ənˈtɪl /

UK / ʌnˈtɪl /

A1
  • conjunction
  • Up to; to a time when something happens
  • preposition
  • Before (a specific time)

seed

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US / si:d /

UK / sid /

B1
  • noun
  • A person's children; offspring
  • Part of a plant used to grow more on them
  • Source of a feeling or thought
  • Top-ranked person in a competition, e.g. in tennis
  • verb
  • (Of plants) to produce seeds for the future
  • To produce seeds, as a plant
  • To remove the center part from a fruit or vegetable
  • To be the source of a feeling or thought
  • To plant seeds in the ground

pollen

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US / ˈpɒlən /

UK / ˈpɑ:lən /

B2
  • noun
  • Fine, usually yellow powder produced by plants

major

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US / 'meɪdʒə(r) /

UK / ˈmedʒɚ /

A2
  • adjecitve
  • Main league; esp. referring to American baseball
  • Important, serious, or large in scope, size
  • noun
  • High-ranking officer in the army
  • Main subject you study at university
  • verb
  • To study a particular subject at university

lot

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US / lɒt /

UK / lɑt /

A1
  • noun
  • What happens to a person in life from chance; fate
  • A group of people seen together
  • Item for sale at an auction
  • Small area of land used for a purpose e.g. parking

harsh

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US / hɑ:ʃ /

UK / hɑrʃ /

B1
  • adjecitve
  • Rough; tough; hard to experience or accept
  • Being severe and unkind

hopefully

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US / ˈhəʊpfəli /

UK / ˈhopfəli /

A2
  • adverb
  • In a manner wishing something to happen

hope

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US / həʊp /

UK / hop /

A1
  • noun
  • When you wish something will happen; what you wish
  • verb
  • To expect and want something to happen

base

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US / beɪs /

UK / bes /

A2
  • noun
  • Place military personnel live, train, and operate
  • Bottom part of an object that touches a surface
  • Unit of counting, e.g. 10 for counting
  • Most important idea or ingredient to add others
  • Origin or start from which something came
  • Main place where an organization or a person works
  • verb
  • To use as the starting point or origin for
  • To have as the main location for (company, etc.)

and

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US / ənd /

UK / ənd, ən,ænd /

A1
  • conjunction
  • Used to refer to two or more things
  • Plus; in addition; on top of that
  • Used to introduce an action that follows another

throughout

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US / θru:ˈaʊt /

UK / θruˈaʊt /

A2
  • adverb
  • From the beginning of something until the end
  • preposition
  • Over/across an entire place/thing; in every part

reproduction

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US / ˌri:prəˈdʌkʃn /

UK / ˌriprəˈdʌkʃən /

B1
  • noun
  • Act or process of producing a copy of something
  • The process of making children

early

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US / ˈɜ:li /

UK / ˈɜ:rli /

A1
  • adjecitve
  • Happening or appearing before
  • adverb
  • Coming/happening before others in a time sequence
  • Happening sooner than expected

most

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US / məʊst /

UK / most /

A1
  • adverb
  • Very; extremely
  • Greatest possible degree
  • pronoun
  • Nearly all of something

hazel

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US / 'heɪzl /

UK / ˈhezəl /

B2
  • noun
  • Color between light brown, green, and gray
  • Type of small tree or bush which can produce nuts
  • Person's name

ephedrine

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US / ˈefɪˌdriːn /

UK / ˈefədrin /

A1
  • noun
  • White odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra

diverse

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US / daɪˈvɜ:s /

UK / dɪˈvɚs, daɪ-, ˈdaɪˌvɚs /

B1
  • adjecitve
  • Being varied or different from each other
  • Very different from each other

over

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US / 'əʊvə(r) /

UK / ˈovɚ /

A1
  • adverb
  • Finished; no longer happening
  • Towards the ground/away from a standing position
  • noun
  • A set of six consecutive balls bowled in cricket
  • other
  • Finished
  • preposition
  • Showing the relation when a thing is above another
  • On or covering something
  • Above or across something
  • More than you need
  • From one side to the other
  • In the direction of; toward

out

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US / aʊt /

UK / aʊt /

A1
  • adverb
  • No longer stylish (e.g. fashion)
  • Away from home, business, or the usual place
  • In a direction/movement away from inside or center
  • noun
  • Act when a batter cannot continue playing
  • verb
  • To tell people a secret

maple

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US / ˈmeɪpl /

UK / ˈmepəl /

B2
  • noun
  • Any of various trees, some producing syrup

hot

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US / hɒt /

UK / hɑ:t /

A1
  • adjecitve
  • Angry or excited
  • Being very good at something
  • Having a high temperature
  • Popular and causing a great deal of excitement
  • Attractive in a sexually exciting way
  • (Of food) very spicy
  • Stolen; dangerous to buy or trade in

digestive

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US / daɪˈdʒestɪv /

UK / daɪˈdʒɛstɪv, dɪ- /

B2
  • adjecitve
  • Concerning processes of converting food to energy

from

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US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

entirely

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US / ɪnˈtaɪəli /

UK / ɪnˈtaɪərli /

A2
  • adverb
  • Wholly; completely

two

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US / tu: /

UK / tu /

A1
  • number
  • 2

trigger

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US / 'trɪɡə(r) /

UK / ˈtrɪɡɚ /

B1
  • noun
  • Lever on a gun that you pull to fire
  • Device that starts a process
  • verb
  • To start a process off e.g. a memory

release

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US / rɪ'li:s /

UK / rɪ'li:s /

A2
  • noun
  • Act of freeing someone from a duty or burden
  • Introduction of a new product, film, book, etc.
  • Relief from sadness, suffering or trouble
  • Act of freeing from a jail, cage, prison, etc.
  • verb
  • To free someone from a responsibility or burden
  • To allow a film, music etc. to be sold/distributed
  • To allow to leave a jail, cage, etc.; let out
  • To let go of something you are holding

put

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US / pʊt /

UK / pʊt /

A1
  • phrasal verb
  • to make a light stop shining by pressing or moving a switch
  • verb
  • To move or place a thing in a particular position
  • To rate something in importance or value
  • To write or say something in a certain manner

only

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US / ˈəunli /

UK / ˈonli /

A1
  • adverb
  • Just one; just that amount or thing; not more than
  • Not very important or serious
  • Just that type of thing, person
  • Short time ago; not before a certain time
  • conjunction
  • Except; but

join

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US / dʒɔɪn /

UK / dʒɔɪn /

A1
  • verb
  • To bring something close to another, to become one
  • To become a member of
  • To participate in an activity with others

completely

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US / kəmˈpli:tli /

UK / kəmˈpliːtli /

A1
  • adverb
  • In every way or as much as possible

clean

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US / kli:n /

UK / klin /

A1
  • adjecitve
  • Not marked in any way; blank
  • Done according to the rules or standards; fair
  • Free from disease or sickness
  • Being free from dirt or marks; washed
  • Behaving well; not breaking any rules; legal
  • adverb
  • Completely; entirely
  • verb
  • To make free from dirt or marks; washed
  • To make neat and orderly e.g. a room
  • To remove the inner parts of an animal

want

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US / wɔnt /

UK / wɑnt, wɔnt /

A1
  • noun
  • Something you desire or wish for
  • State or condition of poverty
  • verb
  • To desire or wish for something; hope for a thing

yet

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US / jet /

UK / jɛt /

A1
  • adverb
  • At a later time (used after ‘not’)
  • (Used to emphasize that thing is, will be greater)
  • Eventually; at a future time
  • Until now; up to the present
  • conjunction
  • Adding to what has been said, often as a contrast

sweep

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US / swi:p /

UK / swip /

A2
  • noun
  • Man who cleans chimneys
  • Act of cleaning a surface with a brush
  • Long, smooth movement made with your arm or a tool
  • Movement or search that covers a large area
  • verb
  • To clean something from a surface with a brush
  • To move or pass quickly and steadily
  • To search a very wide area for something

outermost

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US / ˈaʊtəməʊst /

UK / ˈaʊtərmoʊst /

C2
  • adjecitve
  • Situated the farthest possible point from a center

grass

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US / grɑ:s /

UK / græs /

A2
  • noun
  • Slang name for marijuana
  • Plants with narrow green leaves, grown on lawns
  • verb
  • To betray someone
  • To cover an area of ground to make a lawn or field

acorn

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US / ˈeɪkɔ:n /

UK / ˈeɪkɔ:rn /

B2
  • noun
  • The small round nut of an oak tree

wide

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US / waɪd /

UK / waɪd /

A1
  • adjecitve
  • Having a great distance from one side to the other
  • adverb
  • Fully; completely

whether

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US / ˈweðə(r) /

UK / ˈhwɛðɚ, ˈwɛð- /

A1
  • conjunction
  • If something will happen or not

visualize

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US / ˈvɪʒuəlaɪz /

UK / ˈvɪʒuəˌlaɪz /

B1
  • verb
  • To create a picture in your mind of something

scale

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US / skeɪl /

UK / skel /

A2
  • noun
  • Size, level, or amount when compared
  • Small hard plates that cover the body of fish
  • Device that is used to weigh a person or thing
  • Range of numbers from the lowest to the highest
  • Dimensions or size of something
  • verb
  • To change the size of but keep the proportions
  • To climb something large (e.g. a mountain)
  • To remove the scales of a fish

sense

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US / sens /

UK / sɛns /

A1
  • noun
  • Certain mental feeling or emotion
  • Normal or clear state of mind
  • Meaning of a particular word, phrase or text
  • verb
  • To perceive using sight, sound, taste touch etc.
  • To recognize the presence of something

pattern

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US / 'pætn /

UK / ˈpætən /

A2
  • noun
  • Model to follow in making or doing something
  • Colors or shapes which are repeated on objects
  • Regular repeated behavior
  • verb
  • To copy the way something else is made

harness

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US / 'hɑ:nɪs /

UK / ˈhɑrnɪs /

B1
  • noun
  • Equipment used by horses to pull things
  • verb
  • To capture the power of something

freeze

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US / fri:z /

UK / friz /

A2
  • noun
  • Sudden stop to prevent increase or decreases
  • Period of very cold weather under zero degrees
  • verb
  • To harden to a solid below zero degrees
  • To store an item of food in a cold place
  • To make someone to not want to communicate
  • To stop moving and be still; stay the same

concentric

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US / kənˈsentrɪk /

UK / kənˈsɛntrɪk /

C1
  • adjecitve
  • Having a common center, e.g. some circles

can

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US / kæn /

UK / kən,kæn /

A1
  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container

advantage

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US / əd'vɑ:ntɪdʒ /

UK / ædˈvæntɪdʒ /

A2
  • noun
  • Thing making the chance of success higher
  • A positive point about something

whole

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US / həul /

UK / hol /

A1
  • adjecitve
  • Complete or full; all of
  • Being in a good condition
  • noun
  • Complete amount or sum; total

survive

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US / sə'vaɪv /

UK / sɚˈvaɪv /

A2
  • verb
  • To continue to live despite illness or trouble

squirrel

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US / 'skwɪrəl /

UK / ˈskwɚrəl, ˈskwʌr- /

B2
  • noun
  • Small furry tree-living animal with a big tail

size

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US / saɪz /

UK / saɪz /

A1
  • noun
  • How big or small a thing is
  • Standard measurements for clothing, shoes
  • verb
  • To make something to fit a particular measurement
  • To organize or group from small to large

our

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US / 'aʊə(r) /

UK / aʊr /

A1
  • determiner
  • Belonging to us

osiris

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US / əuˈsaiəris /

UK / oˈsaɪrɪs /

A1
  • other
  • Egyptian god of the underworld and judge of the dead; husband and brother of Isis; father of Horus

reproduce

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US / ˌri:prə'dju:s /

UK / ˌriprəˈdus, -ˈdjus /

B1
  • verb
  • To make a copy of something
  • To have children/young; grow roots/new plants

powerful

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US / ˈpauəful /

UK / ˈpaʊəfəl /

A2
  • adjecitve
  • Having control or influence over
  • Having a lot of physical force, energy, strength

not

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US / nɒt /

UK / nɑt /

A1
  • adverb
  • Word indicating the negative
  • (Used to form the negative of verbs)

development

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US / dɪ'veləpmənt /

UK / dɪˈvɛləpmənt /

A2
  • noun
  • Act or process of growing bigger or more advanced
  • A new event related to a previous event

belong

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US / bɪ'lɒŋ /

UK / bɪˈlɔŋ /

A1
  • verb
  • To be a welcomed as a new member of a group
  • To own something
  • To be in the right place or situation

arrange

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US / əˈreɪndʒ /

UK / əˈrendʒ /

A2
  • verb
  • To write music for a particular instrument
  • To organize things or people in a particular way
  • To plan (an event) at a time and place
  • To organize events so they happen

would

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US / wʊd /

UK / wʊd /

A1
  • other
  • Used to indicate something imagined
  • Used to ask or request something politely
  • Verb used to indicate possibility, request etc.
  • Used to indicate a preference
  • Used to indicate a reaction
  • Indicates something that occurred repeatedly
  • Used to indicate willingness or ability to do

understand

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US / ˌʌndə'stænd /

UK / ˌʌndɚˈstænd /

A1
  • verb
  • To know the meaning of language, what someone says

really

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US / ˈri:əli /

UK / ˈriəˌli, ˈrili /

A1
  • adverb
  • Used to stress something that is said; definitely
  • In a true or accurate manner
  • Very

pollination

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US / ˌpɒlə'neɪʃn /

UK / ˈpɑləneʃən /

B2
  • noun
  • Putting pollen on a plant so it makes seeds

habit

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US / 'hæbɪt /

UK / ˈhæbɪt /

A2
  • noun
  • Loose clothing like a cloak, worn by monks, nuns
  • Usual way of behaving; something often repeated

compare

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US / kəm'peə(r) /

UK / kəmˈpɛr /

A1
  • verb
  • To consider how similar and different things are

brilliant

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US / 'brɪlɪənt /

UK / ˈbrɪljənt /

A2
  • adjecitve
  • Having a great amount of intelligence or talent
  • Being very bright, like a diamond; shining

bury

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US / 'berɪ /

UK / ˈbɛri /

B1
  • verb
  • To put something into the ground and cover it

structure

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US / ˈstrʌk.tʃə /

UK / ˈstrʌk.tʃɚ /

A2
  • noun
  • The way in which the parts of a system or object are arranged or organized, or a system arranged in
  • verb
  • To plan, organize, or arrange the parts of something

organ

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US / 'ɔ:ɡən /

UK / ˈɔrɡən /

B1
  • noun
  • Part of a person's body with a particular function
  • Large institution or body
  • Large wind instrument similar to a piano

ripen

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US / 'raɪpən /

UK / ˈraɪpən /

B1
  • verb
  • To make or become ripe and ready to eat, as fruit

planet

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US / 'plænɪt /

UK / ˈplænɪt /

A2
  • noun
  • One of the bodies that orbit the sun

now

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US / naʊ /

UK / naʊ /

A1
  • adverb
  • At the present time or moment
  • Right away or in the next possible moment
  • Used to refer to something that just happened
  • Time between the present and a moment in the past
  • conjunction
  • Resulting from or because of something

zip

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US / zɪp /

UK / zɪp /

B1
  • noun
  • Energy; vigor; determination
  • Way to say 'nothing' or 'zero'
  • Device with interlocking teeth to close pants, etc.
  • verb
  • To compress digital documents into one file
  • To move very quickly in a certain direction
  • To close using a zipper

nearly

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US / ˈniəli /

UK / ˈnɪrli /

A1
  • adverb
  • Not completely; almost

oak

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US / əʊk /

UK / oʊk /

B2
  • adjecitve
  • Made from a special hard durable wood
  • noun
  • Hard, tough wood taken from an oak tree

enter

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US / 'entə(r) /

UK / ˈɛntɚ /

A1
  • verb
  • To start a career or an education
  • To become a competitor in a contest
  • To add or type information in a computer
  • To go into a room, building etc.

category

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US / ˈkætəgəri /

UK / ˈkætɪˌɡɔri, -ˌɡori /

B1
  • noun
  • Groups of things that are similar in some way

brother

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US / ˈbrʌðə(r) /

UK / ˈbrʌðɚ /

A1
  • noun
  • A boy or man who shares a parent with you

angiosperm

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US / ˌændʒɪəˌspɜ:m /

UK / ˌændʒɪrˌspɜ:m /

A1
  • noun
  • Plants having seeds in a closed ovary

unicorn

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US / ˈju:nɪkɔ:n /

UK / ˈjunɪˌkɔrn /

B2
  • noun
  • Horselike mythical animal with a horn on forehead

transform

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US / træns'fɔ:m /

UK / trænsˈfɔrm /

C2
  • verb
  • To change the shape completely in a good way

pine

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US / paɪn /

UK / paɪn /

B1
  • noun
  • Tall pointed evergreen tree with needlelike leaves
  • verb
  • To feel sad because you miss someone

tiny

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US / 'taɪnɪ /

UK / ˈtaɪni /

A2
  • adjecitve
  • Very, very small

same

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US / seɪm /

UK / sem /

A1
  • adjecitve
  • Being equal in quality and amount
  • Identical; not different
  • Not changing; constant

pollinators

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US / ˈpɒlɪneɪtəz /

UK / ˈpɑləˌneɪtərz /

B2
  • other
  • Insect moving pollen from one plant to another

opportunity

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US / ˌɒpə'tju:nətɪ /

UK / ˌɑpɚˈtunɪti, -ˈtju- /

A2
  • noun
  • Time, situation when a thing might be done; chance

fossil

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US / 'fɒsl /

UK / ˈfɑsəl /

B1
  • noun
  • Plant or animal that became rock after many years

flower

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US / ˈflaʊə(r) /

UK / ˈflaʊɚ /

A2
  • noun
  • Plant with a pretty head, e.g. a rose
  • verb
  • (Of flowers) to emerge into full shape; to bloom
  • To develop successfully or fully

become

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US / bɪ'kʌm /

UK / bɪˈkʌm /

A1
  • verb
  • To begin to be; grow to be; develop into
  • To be suitable for a particular job or role

coincide

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US / ˌkəʊɪn'saɪd /

UK / ˌkoɪnˈsaɪd /

B1
  • verb
  • To occur by chance and without planning
  • To happen together at the same time

coat

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US / kəʊt /

UK / koʊt /

A2
  • noun
  • Clothing worn outside over your normal clothes
  • verb
  • To cover something thinly with something

address

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US / ə'dres /

UK / əˈdrɛs /

A1
  • noun
  • Exact street location of a place
  • A formal speech to a group of people
  • verb
  • To write the place someone lives on a letter
  • To refer to someone or something formally
  • To make a formal speech to a group of people
  • To try to find a solution to; think about

single

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US / 'sɪŋɡl /

UK / ˈsɪŋɡəl /

A1
  • adjecitve
  • Being one only, without others
  • Only; merely
  • Not married or in a relationship
  • noun
  • One run in cricket or a hit baseball
  • An individual song from a CD or album
  • Person who is not married or in a relationship

ovary

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US / ˈəʊvəri /

UK / ˈoʊvəri /

C1
  • noun
  • Egg-producing organ of female humans and animals

life

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US / laɪf /

UK / laɪf /

A1
  • noun
  • All the living things e.g. animals, plants, humans
  • Period of time things live, from birth to death

pistil

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US / ˈpɪstɪl /

UK / ˈpɪstəl /

A1
  • noun
  • Female ovule-bearing part of a flower composed of ovary and style and stigma

but

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US / bət /

UK / bʌt,bət /

A1
  • conjunction
  • Used before you say something different, opposite

bat

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US / bæt /

UK / bæt /

A2
  • noun
  • Small flying mouse-like animal with wings
  • Object used for hitting a ball in various games
  • verb
  • To use a wooden stick in baseball or cricket

tell

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US / tel /

UK / tɛl /

A1
  • verb
  • To (strongly) advise a person to do something
  • To be able to guess
  • To say or communicate information to someone
  • To inform, but without speaking; indicate
  • To have a negative effect on someone
  • To order someone to do something; command
  • To recognize something based on certain signs
  • To report something to an authority
  • To explain something or teach someone something

specie

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US / 'spi:ʃi: /

UK / 'spi:ʃɪ /

B1
  • noun
  • Singular of species

tissue

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US / ˈtɪʃu: /

UK / ˈtɪʃu /

A2
  • noun
  • Substance formed by cells of living thing; flesh
  • Kind of thin, light paper used to pack objects
  • Thin soft paper for blowing the nose, etc.

number

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US / ˈnʌmbə(r) /

UK / ˈnʌmbɚ /

A1
  • noun
  • Symbols such as 1, 2, 56, 793
  • Particular song or dance performed during a show
  • Total quantity or amount of things
  • verb
  • To put numbers on things
  • To assign a sequence within a group, series, set
  • To claim to be part of a larger group, series, set

danish

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US / ˈdeiniʃ /

UK / ˈdenɪʃ /

A1
  • adjecitve
  • Concerning the culture and people of Denmark

virtually

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US / ˈvɜ:tʃuəli /

UK / ˈvɚtʃuəli /

B1
  • adverb
  • In an almost complete or entire manner

second

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US / 'sekənd /

UK / ˈsɛkənd /

A1
  • adjecitve
  • 2nd; the one following first
  • noun
  • Unit of time; one sixtieth of a minute
  • Short period of time that you wait for someone
  • (Do) soon
  • verb
  • To agree to support a proposal at a meeting

get

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US / ɡet /

UK / ɡɛt /

A1
  • verb
  • To become affected by illness or disease
  • To begin to feel or understand an emotion or idea
  • To send or bring someone or something home, etc.
  • To go somewhere to obtain something
  • To (cause to) do a particular thing
  • To obtain, receive or be given something
  • To currently have
  • To prepare for use
  • To understand something being said or read

then

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US / ðen /

UK / ðɛn /

A1
  • adverb
  • A time that is not now
  • Following another thing in time or arrangement
  • Following on reasonably from what was just stated
  • At that time, not now

slowly

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US / ˈsləʊli /

UK / ˈsloʊli /

A1
  • adverb
  • In an unhurried or not speedy manner

orchid

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US / ˈɔ:kɪd /

UK / ˈɔ:rkɪd /

B2
  • noun
  • Color that is light purple
  • Showy plant, often with unusually shaped flowers

preserve

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US / prɪˈzɜ:v /

UK / prɪˈzɜ:rv /

B1
  • noun
  • Protected area of land with plants and animals
  • verb
  • To cook food so it can be kept for long periods
  • To protect something from harm, loss or damage
  • To keep or maintain unchanged or perfect

include

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US / ɪnˈklu:d /

UK / ɪnˈklud /

A1
  • verb
  • To make someone, something part of a group

family

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US / 'fæməlɪ /

UK / ˈfæmli /

A1
  • noun
  • Close group of people or organizations
  • A group of people who are related through blood
  • Group of related plants or animals

down

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US / daʊn /

UK / daʊn /

A1
  • adjecitve
  • Being sad, sick, or unhappy
  • Not operating, working, or functioning as expected
  • adverb
  • In a sitting or lying position
  • Towards or on the ground, floor, or bottom
  • Written or copied onto a piece of paper or book
  • noun
  • A period of play in American Football
  • The soft, smooth hairs that cover a bird's body
  • preposition
  • Along something's path, course, or direction
  • Going from a higher position to a lower position
  • verb
  • To eat or drink very quickly and without stopping

fire

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US / 'faɪə(r) /

UK / faɪr /

A1
  • noun
  • Heat and the flame produced when burning
  • Intense energy for or about something
  • verb
  • To apply heat to something to make it hard
  • To make a person leave their job; dismiss
  • To shoot a gun or weapon
  • To launch something into the sky, e.g. a rocket
  • To start working on something e.g. a project

egg

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US / eg /

UK / ɛɡ /

A2
  • noun
  • Hard-shelled thing from which a young bird is born

comment

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US / 'kɒment /

UK / ˈkɑmɛnt /

A2
  • noun
  • Something you say, giving an opinion; remark
  • verb
  • To say something that gives your opinion

abundant

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US / əˈbʌndənt /

UK / əˈbʌndənt /

B2
  • adjecitve
  • Being in very great supply; plentiful

sprout

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US / spraʊt /

UK / spraʊt /

B2
  • noun
  • New part of a plant that has just begun to grow
  • verb
  • To grow, produce, or develop e.g. ideas
  • (Of plants) to start to grow or produce leaves

watch

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US / wɒtʃ /

UK / wɑtʃ /

A1
  • noun
  • Period of time someone is responsible for guarding
  • Device you wear on your wrist that shows the time
  • Official warning statement, e.g. of bad weather
  • verb
  • To keep in check, manage, or control something
  • To look at something for entertainment, e.g. TV
  • To guard a place or people; protect child, etc.
  • To look at carefully to work out what is happening
  • To protect and care for someone or something

type

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US / taɪp /

UK / taɪp /

A1
  • noun
  • Printed letters or blocks used for printing them
  • Group of things or people sharing common features
  • verb
  • To identify something belonging to a group
  • To write by touching keys on a keyboard

tend

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US / tend /

UK / tɛnd /

A2
  • verb
  • To move or act in a certain manner
  • To take care of
  • To regularly behave in a certain way

mean

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US / mi:n /

UK / min /

A1
  • adjecitve
  • Being good at
  • Nasty; unkind
  • Not liking to spend money; cheap; stingy
  • noun
  • Average of a set of numbers
  • verb
  • To express a particular idea or thought
  • To intend to do something in particular
  • To have a particular meaning or value

great

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US / ɡreɪt /

UK / ɡret /

A1
  • adjecitve
  • Very large in size
  • Very important
  • Very good; fantastic; wonderful
  • adverb
  • Very good; better than before
  • noun
  • Successful and well-admired person

harden

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US / 'hɑ:dn /

UK / 'hɑ:rdn /

A2
  • verb
  • To make or become hard or firm

expand

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US / ɪk'spænd /

UK / ɪkˈspænd /

A2
  • verb
  • To make something larger in size, number, amount

find

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US / faɪnd /

UK / faɪnd /

A1
  • noun
  • Object discovered by chance
  • Things that have been discovered from searching
  • verb
  • To become aware of something that is happening
  • To discover or meet by chance
  • To decide if someone is guilty of a crime, or not
  • To learn through study, research, or effort
  • To discover something by looking for it

attract

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US / ə'trækt /

UK / əˈtrækt /

A2
  • verb
  • To make something move closer using magnetic force
  • To make someone notice and become interested in

apple

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US / ˈæpl /

UK / ˈæpəl /

A1
  • noun
  • Hard round red or green fruit with a white center

stoma

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US / ˈstəʊmə /

UK / ˈstoʊmə /

A1
  • noun
  • Minute epidermal pore in a leaf or stem through which gases and water vapor can pass

botany

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US / ˈbɒtəni /

UK / ˈbɑ:təni /

B2
  • noun
  • The science studies plant life

effective

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US / ɪˈfektɪv /

UK / ɪˈfɛktɪv /

A1
  • adjecitve
  • Working efficiently to produce a desired result

fir

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US / fɜ:(r) /

UK / fə: /

B2
  • noun
  • Type of evergreen tree

plant

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US / plɑ:nt /

UK / plænt /

A2
  • noun
  • Factory or a place where things are made
  • Living thing with leaves and roots growing in soil
  • verb
  • To firmly position something (in the ground)
  • To put seeds, flowers, trees in the ground

level

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US / 'levl /

UK / ˈlɛvəl /

A2
  • adjecitve
  • (Sports) equal to another
  • Being steady and determined (e.g. a voice)
  • noun
  • Specific height of something
  • Amount of ability you have compared to others
  • Floor or deck within a building
  • Tool used to determine if something is lying flat
  • verb
  • To aim a gun at someone
  • To destroy a building; flatten an area completely
  • To make things flat or even
  • To make a score equal to another, in sports

tweak

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US / twi:k /

UK / twik /

C1
  • noun
  • A small change or adjustment
  • verb
  • To make a small change or adjustment

carrot

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US / ˈkærət /

UK / ˈkærət /

B1
  • noun
  • Reward offered to make someone do something
  • Long hard orange vegetable that grows underground

botanical

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US / bəˈtænɪkl /

UK / bəˈtænɪkəl /

B2
  • adjecitve
  • Concerning plants or botany

dependent

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US / dɪˈpendənt /

UK / dɪˈpɛndənt /

A2
  • adjecitve
  • Someone who relies on (financial) support

face

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US / feɪs /

UK / fes /

A1
  • noun
  • Side or outer surface of something
  • An expression using mouth, nose, eyes etc.
  • Front part of the head where eyes, mouth etc. are
  • Characteristics you show in public
  • verb
  • To cover a surface with something like paint
  • To deal with a problem or responsibilities
  • To look toward; point in a certain direction

generation

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US / ˌdʒenəˈreɪʃn /

UK / ˌdʒɛnəˈreʃən /

A2
  • noun
  • Act or process of producing or causing something
  • People born and living at about the same time

those

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US / ðəʊz /

UK / ðoz /

A1
  • determiner
  • The people or things we are talking about
  • pronoun
  • The objects far from the speaker

though

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US / ðəu /

UK / ðo /

A1
  • adverb
  • Although, despite the fact that

foxtail

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US / 'fɒksteɪl /

UK / 'fɒksˌteɪl /

C2
  • noun
  • Grass with dense, brush-like flowering spikes

for

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US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

indonesian

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US / ˌɪndəˈni:ʒən, -ʃən /

UK / ˌɪndəˈniʒən, -ʃən /

A1
  • adjecitve
  • Concerning the culture and people of Indonesia
  • noun
  • Person from Indonesia

peony

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US / ˈpiːəni /

UK / ˈpiːəni /

C1
  • noun
  • Plant with large showy red, pink or white flowers

through

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US / θru: /

UK / θru /

A2
  • adjecitve
  • having finished using or doing something
  • adverb
  • From the beginning of something until the end
  • preposition
  • Over, in, across an entire thing or place
  • Allowing you to pass between, or to
  • By a particular way or process; by the use of

why

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US / waɪ /

UK / hwaɪ, waɪ /

A1
  • adverb
  • Question word to ask for a reason
  • exclamation
  • (Used to express surprise or approval)

wind

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US / wɪnd /

UK / wɪnd /

A1
  • adjecitve
  • (Musical instruments) that you blow into to play
  • noun
  • A current of air moving approximately horizontally, especially one strong enough to be felt
  • Something that has influence
  • verb
  • If a road, path, or river winds, it follows a route that turns repeatedly in different directions
  • To turn or cause something to turn
  • To twist around something

animal

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US / ˈænɪml /

UK / ˈænəməl /

A1
  • noun
  • A living creature that is not a plant or person

cycle

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US / ˈsaɪkl /

UK / ˈsaɪkəl /

A2
  • noun
  • Series of regular and repeated actions
  • Bicycle, bike
  • verb
  • To go through a series of events repeatedly
  • To ride on a bicycle

foundational

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US / faʊn'deɪʃənəl /

UK / faʊn'deɪʃənəl /

C1
  • adjecitve
  • Being the base or important starting point

just

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US / dʒʌst /

UK / dʒʌst /

A1
  • adjecitve
  • Proper or appropriate; as is deserved
  • Doing or being what is right or fair
  • Legally correct; having enough evidence
  • adverb
  • Almost; nearly
  • Exactly at the time of
  • Exactly (the same as, like)

precede

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US / prɪ'si:d /

UK / prɪˈsid /

B1
  • verb
  • To happen or come before something
  • To go somewhere before a person/thing

bubble

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US / ˈbʌbl /

UK / ˈbʌbəl /

B1
  • noun
  • A small ball of air inside of a liquid
  • verb
  • (Of a liquid) to produce bubbles, as when boiling
  • To show intense emotion, e.g. excitement, anger

combination

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US / ˌkɒmbɪ'neɪʃn /

UK / ˌkɑmbəˈneʃən /

B1
  • noun
  • Series of letters or numbers needed to open a lock
  • Act or result of mixing things together

efficiently

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US / ɪ'fɪʃntlɪ /

UK / ɪˈfɪʃəntlɪ /

A2
  • adverb
  • In a way that does not create waste

few

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US / fju: /

UK / fju /

A1
  • pronoun
  • Not many, a small number

evolve

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US / ɪ'vɒlv /

UK / ɪˈvɑlv /

B1
  • verb
  • To develop certain features
  • To develop or change slowly over time
  • To slowly change or develop into something better

explode

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US / ɪk'spləʊd /

UK / ɪkˈsplod /

B1
  • verb
  • To express an emotion in a sudden and loud way
  • To increase in number or amount very quickly
  • To burst or cause to burst into pieces

much

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US / mʌtʃ /

UK / mʌtʃ /

A1
  • adjecitve
  • Very; to a high level or degree
  • adverb
  • A lot; large amount; a high degree of
  • Nearly; basically
  • On many occasions; often
  • noun
  • A large amount; a great quantity

earth

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US / ɜ:θ /

UK / ɚθ /

A1
  • noun
  • Wire connecting an electrical device to the ground
  • The planet we live on
  • Soil in which we grow plants

system

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US / 'sɪstəm /

UK / ˈsɪstəm /

A1
  • adjecitve
  • Working in an organized, logical way
  • noun
  • Set of organized, planned ideas that work together

mountaintop

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US / ˈmaʊntəntɒp /

UK / ˈmaʊntntɑ:p /

B2
  • noun
  • The top of a mountain; summit

largely

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US / ˈlɑ:dʒli /

UK / ˈlɑ:rdʒli /

A2
  • adverb
  • In large part; mainly or chiefly

seedless

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US / ˈsi:dləs /

UK / ˈsidlɪs /

B1
  • adjecitve
  • (Of a fruit) lacking seeds

they

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US / ðeɪ /

UK / ðe /

A1
  • pronoun
  • Two or more people, animals, or things

very

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US / 'verɪ /

UK / ˈvɛri /

A1
  • adjecitve
  • Concerning a large degree or amount
  • adverb
  • A lot; much; many
  • Used to stress or emphasize a noun

absorb

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US / əb'sɔ:b /

UK / əbˈsɔrb, -ˈzɔrb /

B1
  • verb
  • To take up all attention / energy of something
  • To take in a liquid; soak up

both

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US / bəuθ /

UK / boθ /

A1
  • determiner
  • Used to refer to two things at the same time
  • pronoun
  • Used to refer to two things at the same time

change

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US / tʃeɪndʒ /

UK / tʃendʒ /

A1
  • noun
  • Exchange of one set of clothes for another
  • Money in the form of coins instead of paper
  • Money returned after giving too much
  • Act of making or becoming something else
  • verb
  • To exchange one set of clothes for another
  • To exchange one kind of money for another
  • To replace something with another thing
  • To make or become something else
  • To go from one train, bus, etc. and go to another

pore

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US / pɔ:(r) /

UK / pɔr, por /

B2
  • noun
  • Small hole on skin, etc. allowing liquid to pass

travel

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US / ˈtrævl /

UK / ˈtrævəl /

A1
  • noun
  • Going to other places, esp. distant places
  • verb
  • To go to a place that is far away

ago

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US / əˈgəʊ /

UK / əˈgoʊ /

A1
  • adverb
  • At a specified length of time in the past

conifer

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US / ˈkɒnɪfə(r) /

UK / ˈkɑ:nɪfə(r) /

C1
  • noun
  • Evergreen tree with cones and needlelike leaves

envelope

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US / ˈenvələʊp /

UK / ˈenvəloʊp /

B1
  • noun
  • Paper cover you put around a letter to mail it

huge

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US / hju:dʒ /

UK / hjudʒ /

A2
  • adjecitve
  • Very very large

move

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US / mu:v /

UK / muv /

A1
  • noun
  • Act of moving a playing piece in chess, etc.
  • An action; doing something
  • Step taken to achieve a goal
  • verb
  • To cause someone to have certain emotions
  • To cause something to change to a different place
  • To change where people live or a business operates
  • To take action to do or achieve something

nurture

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US / ˈnɜ:tʃə(r) /

UK / ˈnɜ:rtʃə(r) /

B1
  • noun
  • Care and support given to people as they develop
  • other
  • To help something or someone to grow or succeed
  • verb
  • To help something or someone to grow or succeed

yes

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US / jes /

UK / jɛs /

A1
  • adverb
  • Way to say you agree or will do something

their

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US / ðɛː /

UK / ðer /

A1
  • determiner
  • Belonging to them

way

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US / weɪ /

UK / we /

A1
  • adverb
  • Used to emphasize the amount of something
  • noun
  • Particular aspect of something being thought about
  • One of various choices that could be made
  • Particular existing condition or state
  • (Often long) distance or length of time
  • How something is done
  • Route to go to a place
  • Small street
  • Usual behavior, emotions or habits of someone

bit

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US / bɪt /

UK / bɪt /

A1
  • noun
  • Device put in a horse's mouth to control it
  • Small piece of something
  • verb
  • (E.g. of fish) to take bait and be caught

jewelweed

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US / 'dʒu:əlwi:d /

UK / 'dʒu:əlˌwi:d /

A1
  • verb
  • North American annual plant with usually yellow or orange flowers; grows chiefly on wet rather acid

human

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US / 'hju:mən /

UK / ˈhjumən /

A1
  • adjecitve
  • Concerning or characteristic of people
  • noun
  • A person; a man, woman or child

look

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US / lʊk /

UK / lʊk /

A1
  • noun
  • Person's beauty or physical attractiveness
  • Particular style of dress, clothes, or appearance
  • The way someone, something appears to be
  • Act of searching for or examining something
  • verb
  • To appear to be; seem

nature

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US / 'neɪtʃə(r) /

UK / ˈnetʃɚ /

A1
  • noun
  • Person's character or particular way of behaving
  • Basic look, feel or function of something
  • Physical world, including plants, animals, rocks

innovation

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US / ˌɪnəˈveɪʃn /

UK / ˌɪnəˈveʃən /

B1
  • noun
  • Process of creating new ideas or inventions

swimming

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US / ˈswɪmɪŋ /

UK / ˈswɪmɪŋ /

A1
  • noun
  • The act of moving through water
  • verb
  • To move through water by moving parts of the body

thank

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US / θæŋk /

UK / θæŋk /

A1
  • verb
  • To tell someone you are grateful to them

build

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US / bɪld /

UK / bɪld /

A1
  • noun
  • Your physical shape; physique
  • verb
  • To establish e.g. a reputation, over time
  • To construct a house, office, factory

arctic

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US / 'ɑ:ktɪk /

UK / ˈɑrktɪk, ˈɑrtɪk /

A1
  • adjecitve
  • The regions to the north of the Arctic Circle centered on the North Pole
  • Region 66.3 degrees latitude north of the equator

feature

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US / 'fi:tʃə(r) /

UK / ˈfitʃɚ /

A2
  • adjecitve
  • Main; important
  • noun
  • Special report in a magazine or paper
  • Distinctive or important point of something
  • verb
  • To highlight or give special importance to

old

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US / əʊld /

UK / old /

A1
  • adjecitve
  • Having existed for a long time, not young or new
  • Age of a person since birth

petal

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US / ˈpetl /

UK / ˈpɛtl /

B2
  • noun
  • Delicate colored part of a flower

work

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US / wɜ:k /

UK / wɚk /

A1
  • adjecitve
  • Activity completed in order to make money
  • noun
  • The product of some artistic or literary endeavor
  • Everything created by an author, artist, musician
  • Activity you do in order to make money
  • Place of employment
  • Final product or result of a some labor or effort
  • verb
  • To bring into a specific state of success
  • To be functioning properly, e.g. a car
  • To do your job in your company or workplace
  • To make an effort to do something
  • To operate a machine or device

all

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US / ɔ:l /

UK / ɔl /

A1
  • adverb
  • Completely; totally
  • determiner
  • Being every one of something
  • pronoun
  • 100% of something; the complete amount

common

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US / 'kɒmən /

UK / ˈkɑmən /

A1
  • adjecitve
  • Shared; Belonging to or used by everyone
  • Typical, normal; not unusual
  • noun
  • Area in a city or town that is open to everyone
  • Field near a village owned by the local community

everyone

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US / ˈevriwʌn /

UK / ˈɛvriˌwʌn /

A1
  • pronoun
  • Every person; everybody

drop

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US / drɒp /

UK / drɑp /

A1
  • noun
  • Distance between a higher and a lower level
  • Act of letting something fall (from your hand)
  • A decrease in quantity or quality; reduction
  • Tiny amount of liquid, with rounded bottom
  • verb
  • To drive someone to a place and then drive away
  • To let something fall from your hand
  • To fall or lie down quickly, as when shot
  • To decide to stop something e.g. a course)
  • To (cause to) reduce in quantity or quality

fast

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US / fɑ:st /

UK / fæst /

A1
  • adjecitve
  • In a way that is difficult to move or change
  • Moving or able to move quickly
  • Showing time that is later than the actual time
  • adverb
  • With a great deal of speed
  • noun
  • Period of time when a person chooses not to eat
  • verb
  • To refuse food for a long time

its

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US / ɪts /

UK / ɪts /

A1
  • adjecitve
  • Referring to or belonging to ‘it’
  • determiner
  • Of something; belonging or related to something
  • other
  • Possessive form of “it”

produce

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US / prə'dju:s /

UK / prəˈdus, -ˈdjus, pro- /

A1
  • noun
  • Fresh foods such as fruits and vegetables
  • verb
  • To grow something naturally
  • To make something appear
  • To manufacture something using machines
  • To control the making a movie or television show

top

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US / tɒp /

UK / tɑp /

A1
  • adjecitve
  • Being good or great; excellent
  • Being the most in degree or quality
  • noun
  • Item of clothing covering shoulders to waist, hips
  • A cover or lid
  • Part (e.g. road) that is the furthest away
  • Highest or upper part or point of something
  • Best or highest status or position
  • Flat upper surface or edge of an object
  • Child's toy that spins on its point
  • Upper section or leaves of fruits and vegetables
  • Winning in a sport or contest
  • verb
  • To be higher or larger than a specific value
  • To arrive at the highest point of something
  • To put a cover or layer or over something
  • To kill; murder
  • To hold the highest position on a list
  • To be more important, successful or better than
  • To beat someone or win at a game

photosynthesis

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US / ˌfəʊtəʊˈsɪnθəsɪs /

UK / ˌfotoˈsɪnθɪsɪs /

C1
  • noun
  • Process of plants using the sun to make their food

main

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US / meɪn /

UK / men /

A1
  • adjecitve
  • Most important; most often used

pretty

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US / 'prɪtɪ /

UK / ˈprɪti /

A1
  • adjecitve
  • Being attractive to the eye in a simple way
  • adverb
  • Very; to a great degree

possible

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US / ˈpɒsəbl /

UK / ˈpɑsəbəl /

A1
  • adjecitve
  • Being able or appropriate for a task or purpose
  • Having a chance of happening, or being true

sweden

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US / 'swi:dn /

UK / 'swi:dn /

A1
  • proper noun
  • A country that occupies the eastern part of the Scandinavian peninsula; population 9,800,000 (estima

accurately

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US / 'ækjərətlɪ /

UK / 'ækjərətlɪ /

A2
  • adverb
  • Exactly and without any mistakes; correctly

end

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US / end /

UK / ɛnd /

A1
  • noun
  • The point where a process or activity stops
  • A point that marks the limit of something; finish
  • Goal or desired result
  • The tip, edge or limit of something
  • verb
  • To be the last part of something

exist

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US / ɪɡ'zɪst /

UK / ɪɡˈzɪst /

A1
  • verb
  • To be present, alive or real

explore

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US / ɪk'splɔ:(r) /

UK / ɪkˈsplɔr /

A2
  • verb
  • To examine something in detail to learn about it
  • To travel to a place to discover more about it

explosive

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US / ɪkˈspləʊsɪv /

UK / ɪkˈsplosɪv /

B1
  • adjecitve
  • Tending to show strong emotion suddenly
  • Occurring very quickly and suddenly
  • Able to release a lot of energy fast, like a bomb
  • noun
  • Material which can explode (e.g. a bomb)

ratio

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US / ˈreɪʃiəʊ /

UK / ˈreɪʃioʊ /

C2
  • noun
  • The relationship in relative size, etc.

scene

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US / si:n /

UK / sin /

A2
  • noun
  • Incident where someone behaves angrily, badly
  • View that looks like a picture
  • Place where something particular happened
  • Part of an act in a play

blow

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US / bləʊ /

UK / blo /

A2
  • noun
  • Something that causes you difficulty or sadness
  • Act of making air come out of your mouth
  • A hit or strike from an object
  • verb
  • To move something using air
  • To make air come quickly out of your mouth
  • To clear something by forcing air through it

bear

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US / bɛː /

UK / bɛr /

A2
  • noun
  • Large brown animal with fur that lives in forests
  • Someone who expects stock market to fall
  • verb
  • To accept (responsibilities or duties)
  • To give birth to a child; to produce fruit
  • To accept or suffer the weight of difficulties
  • To keep moving left or right while going forward
  • To show (sign of something)
  • To support the weight of something, e.g. a bridge

charcoal

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US / ˈtʃɑ:kəʊl /

UK / ˈtʃɑ:rkoʊl /

B2
  • noun
  • Burnt wood used for fuel/drawing

film

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US / fɪlm /

UK / fɪlm /

A2
  • noun
  • Thin layer that covers something
  • Movie
  • verb
  • To record moving action with a camera

desert

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US / 'dezət /

UK / ˈdɛzət /

A2
  • noun
  • Bare area of land, often with few plants and water
  • verb
  • To leave a place for ever; abandon
  • To leave when one is needed or expected to stay

location

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US / ləʊˈkeɪʃn /

UK / loʊˈkeɪʃn /

B1
  • noun
  • Particular position or area of place, event, etc.

next

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US / nekst /

UK / nɛkst /

A1
  • adverb
  • The one that follows another in time or order
  • At a time or place directly after the present one
  • noun
  • The one that follows after
  • adjecitve
  • Immediately after the previous one
  • First occurrence after the present one

scientist

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US / ˈsaɪəntɪst /

UK / ˈsaɪəntɪst /

A2
  • noun
  • Person who is trained in a science

could

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US / kəd /

UK / kʊd /

A1
  • other
  • Past form of 'can' to mean have ability
  • Used to ask for something politely, or to offer

competition

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US / ˌkɒmpəˈtɪʃn /

UK / ˌkɑmpɪˈtɪʃən /

A2
  • noun
  • Fighting against others to win something

complete

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US / kəm'pli:t /

UK / kəmˈplit /

A1
  • adjecitve
  • Being finished; done; achieved
  • Being as perfect and as total as could be
  • verb
  • To finish or reach the end of doing something

moment

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US / 'məʊmənt /

UK / 'moʊmənt /

A1
  • noun
  • Very short or brief period of time
  • A particular period in time

know

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US / nəʊ /

UK / noʊ /

A1
  • verb
  • To be familiar with a person or place, thing
  • To feel sure or be convinced about something
  • To discover or be aware of something
  • To be able to distinguish
  • To have knowledge of things

often

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US / ˈɔfən /

UK / ˈɔfən,ˈɑfən,ˈɔftən,ˈɑf- /

A1
  • adverb
  • Many times; frequently; on many occasions

repeat

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US / rɪˈpi:t /

UK / rɪˈpit /

A2
  • noun
  • Action that is done again
  • Musical passage that is to be played again
  • Radio or television program that was shown before
  • verb
  • To do something over again
  • To say something you have learned and memorized
  • To relate something you have been told by another
  • To say something again

mature

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US / məˈtʃʊə(r) /

UK / məˈtʃʊr /

A2
  • adjecitve
  • Behaving like an adult
  • Being fully developed physically
  • verb
  • (Wine, cheese) To age to improve its taste

process

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US / prə'ses /

UK / ˈprɑsˌɛs, ˈproˌsɛs /

A2
  • noun
  • Dealing with official forms in the way required
  • Set of changes that occur slowly and naturally
  • verb
  • To organize and use data in a computer
  • To deal with official forms in the way required
  • To prepare by treating something in a certain way
  • To adopt a set of actions that produce a result
  • To convert by putting something through a machine

recently

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US / ˈri:sntli /

UK / 'risṇtlɪ /

A1
  • adverb
  • Just a while ago; not long ago

spore

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US / spɔ:(r) /

UK / spɔr, spor /

C1
  • noun
  • Tiny cell like dust that can reproduce itself

tenure

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US / ˈtenjə(r) /

UK / ˈtɛnjɚ, -ˌjʊr /

B2
  • noun
  • Land or buildings one owns
  • Permanent right to (e.g. university teaching) job
  • Period of time which a particular office is held

upon

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US / əˈpɔn, əpən /

UK / əˈpɑn, əˈpɔn /

A1
  • preposition
  • More formal term for 'on'

with

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US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together

via

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US / ˈvaɪə /

UK / ˈvaɪə, ˈviə /

B1
  • preposition
  • By the means of using something
  • By going through, by way of

fertilization

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US / ˌfɜ:təlaɪ'zeɪʃn /

UK / ˌfɚtlɪˈzeʃən /

B1
  • noun
  • Process of a sperm entering an egg in reproduction

group

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US / ɡru:p /

UK / ɡrup /

A1
  • noun
  • Two or more musicians who play music together
  • Number of people or things gathered together
  • verb
  • To combine or collect objects or people together

protect

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US / prə'tekt /

UK / prəˈtɛkt /

A1
  • verb
  • To defend someone or something from harm or danger

outgrow

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US / ˌaʊt'ɡrəʊ /

UK / aʊtˈɡro /

C2
  • verb
  • To grow too large so something doesn't fit

world

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US / wɜ:ld /

UK / wɜrld /

A1
  • noun
  • All the humans, events, activities on the earth
  • Political division due to some kind of similarity

almost

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US / 'ɔ:lməʊst /

UK / ˈɔlˌmost, ɔlˈmost /

A1
  • adverb
  • Only a little less than, nearly, not quite

before

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US / bɪˈfɔ:(r) /

UK / bɪˈfɔr,-ˈfor /

A1
  • adverb
  • At a time earlier than the present; previously
  • conjunction
  • In advance of something happening
  • preposition
  • In front of someone or something

have

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US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

last

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US / lɑ:st /

UK / læst /

A1
  • adjecitve
  • Most recent; the latest
  • The one before
  • adverb
  • Final; with nothing following; after all others
  • Most recent; the latest
  • determiner
  • The one at the end
  • verb
  • To remain or continue for a certain period of time

information

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US / ˌɪnfəˈmeɪʃn /

UK / ˌɪnfɚˈmeʃən /

A1
  • noun
  • Collection of facts and details about something

part

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US / pɑ:t /

UK / pɑ:rt /

A1
  • adjecitve
  • To some degree; half; not fully
  • noun
  • Division of a book
  • Ratio of something, e.g. 3 of gin, 1 of tonic
  • A line in a person's hair, made with a comb
  • Character an actor plays on stage, movie, or TV
  • Some, but not all of a specific thing
  • Role in causing something to happen
  • verb
  • To make a line in a person's hair, by using a comb
  • To move two things apart creating a space
  • To leave someone, or to break off a relationship

sporangium

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US / spɒˈrændʒɪəm /

UK / spəˈrændʒiəm /

A1
  • other
  • Organ containing or producing spores

without

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US / wɪˈðaʊt /

UK / wɪðˈaʊt, wɪθ- /

A1
  • preposition
  • Not with; not having

air

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US / eə(r) /

UK / er /

A1
  • noun
  • Mixture of gases around the earth that we breathe
  • A person's manner intended to impress others
  • verb
  • To expose to the outside, to dry or freshen
  • To broadcast a TV or radio show
  • To open a subject to discussion and debate

botanist

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US / ˈbɒtənɪst /

UK / ˈbɑtnɪst /

B2
  • noun
  • Scientist who focuses on the study of plant life

cypress

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US / 'saɪprəs /

UK / ˈsaɪprɪs /

C1
  • noun
  • Tall evergreen tree with dark green leaves

ginkgo

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US / ˈɡɪŋkəʊ /

UK / ˈɡɪŋkoʊ /

A1
  • noun
  • Deciduous Chinese tree with fan-shaped leaves

history

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US / 'hɪstrɪ /

UK / ˈhɪstəri /

A2
  • noun
  • Established pattern or record
  • Study of past events as an academic subject

increase

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US / ɪn'kri:s /

UK / ɪnˈkris /

A1
  • noun
  • Fact of increasing; amount something grows by
  • verb
  • To make or become larger in size or amount

community

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US / kə'mju:nətɪ /

UK / kəˈmjunɪti /

A2
  • noun
  • Group of people who share a common idea or area

onto

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US / ˈɒntə /

UK / ˈɑnˌtu, -tə, ˈɔn- /

A1
  • preposition
  • Towards a certain direction/into a certain area

see

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US / si: /

UK / si /

A1
  • verb
  • To go on a date with someone
  • To predict whether something is, or will be true
  • To understand what someone says
  • To use your eyes to look at something
  • To visit a place often for sightseeing or pleasure
  • To visit or meet with someone
  • To find out by waiting or looking
  • To watch (a game, movie or TV show)

specialized

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US / ˈspeʃəlaɪzd /

UK / ˈspɛʃəlˌaɪzd /

A2
  • verb
  • To focus on one area of a field or profession
  • To name something individually

contain

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US / kənˈteɪn /

UK / kənˈten /

A2
  • verb
  • To keep something from spreading
  • To hold something inside something else

eat

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US / i:t /

UK / it /

A1
  • verb
  • To put food in your mouth

elsa

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US / ˈɡɔtn /

UK / ˈɡɑtn /

A1

four

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US / fɔ:(r) /

UK / fɔr, for /

A1
  • number
  • 4

interact

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US / ˌɪntər'ækt /

UK / ˌɪntɚˈækt /

A2
  • verb
  • To talk or do things with each other

gymnosperm

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US / 'dʒɪmnəspɜ:m /

UK / 'dʒɪmnəˌspɜ:m /

A1
  • noun
  • Plants of the class Gymnospermae having seeds not enclosed in an ovary

habitat

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US / 'hæbɪtæt /

UK / ˈhæbɪˌtæt /

B1
  • noun
  • Natural place where a plant or animal lives

million

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US / ˈmɪljən /

UK / ˈmɪljən /

A1
  • number
  • 1,000,000

inside

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US / ˌɪn'saɪd /

UK / ɪnˈsaɪd, ˈɪnˌsaɪd /

A2
  • adjecitve
  • Being in something
  • Being in a building
  • adverb
  • Into a house; indoors
  • noun
  • Inner part or surface of something

once

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US / wʌns /

UK / wʌns /

A1
  • adverb
  • One time; one instance
  • At a time in the past
  • conjunction
  • When; as soon as

while

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US / waɪl /

UK / hwaɪl, waɪl /

A1
  • conjunction
  • In spite of the fact that; although
  • During the time that; at the same time
  • noun
  • Short amount of time

continue

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US / kən'tɪnju: /

UK / kənˈtɪnju /

A1
  • verb
  • To do something without stopping, or after pausing
  • To start doing again after a break, pause, or stop

countless

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US / ˈkaʊntləs /

UK / ˈkaʊntlɪs /

B1
  • adjecitve
  • Being too many to be numbered or imagined

ecological

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US / ˌi:kəˈlɒdʒɪkl /

UK / ˌi:kəˈlɑ:dʒɪkl /

B1
  • adjecitve
  • Concerning the environment, plants, or animals

unless

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US / ənˈles /

UK / ʌnˈlɛs /

A2
  • conjunction
  • Negative of 'if'

consider

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US / kən'sɪdə(r) /

UK / kənˈsɪdər /

A1
  • verb
  • To think carefully about something

beautiful

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US / 'bju:tɪfl /

UK / ˈbjutəfəl /

A1
  • adjecitve
  • Having dome something well
  • Being very attractive or appealing physically

prehistoric

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US / ˌpri:hɪˈstɒrɪk /

UK / ˌpri:hɪˈstɔ:rɪk /

B1
  • adjecitve
  • Relating to the period before written history
  • Out-dated; very old-fashioned

ripe

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US / raɪp /

UK / raɪp /

B1
  • adjecitve
  • (Of a smell) disgusting
  • Fully grown or mature; ready to eat
  • Being ready, mature or appropriate for something

visit

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US / ˈvɪzɪt /

UK / ˈvɪzɪt /

A1
  • noun
  • Trip to a place for a time, usually for a reason
  • verb
  • To go to a place for a time, usually for a reason

soft

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US / sɒft /

UK / sɔft, sɑft /

A2
  • adjecitve
  • Having flowing curves rather than sharp edges
  • Easy to press, bend or cut; not hard or firm
  • Showing a sympathetic and gentle heart
  • Not rough to the touch; light in feel
  • (Of lights, music) not too bright; not too loud

embryo

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US / ˈembriəʊ /

UK / ˈɛmbriˌo /

B2
  • noun
  • Tiny plant stored inside a seed
  • Early form of an unborn human or animal

develop

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US / dɪ'veləp /

UK / dɪˈvɛləp /

A1
  • verb
  • To explain something in steps and in detail
  • To create or think of something
  • To grow bigger, more complex, or more advanced
  • To make a photograph from film

day

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US / deɪ /

UK / de /

A1
  • noun
  • A period of 24 hours beginning at midnight
  • The period of time when it is light outside
  • Person's name

point

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US / pɔɪnt /

UK / pɔɪnt /

A1
  • noun
  • An item to be discussed
  • Small spot or dot
  • Fact or detail
  • Feature of something
  • The size of the text on a page or screen
  • A certain time or stage in a process
  • Certain position in time or space
  • Idea or fact you try to convince people about
  • Measurement of scores in a game, sport
  • Sharp end of something, e.g. a pen or pin
  • verb
  • To face a certain direction, e.g. north
  • To indicate something with your finger to others

resemble

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US / rɪˈzembl /

UK / rɪˈzɛmbəl /

B1
  • verb
  • To be similar to in looks or manner

sequoia

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US / sɪˈkwɔɪə /

UK / sɪ'kwɔɪə /

A1
  • noun
  • A huge coniferous California tree

splat

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US / splæt /

UK / splæt /

C2
  • noun
  • The sound of something soft hitting a hard surface
  • verb
  • To make a sound when hitting something hard

astounding

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US / əˈstaʊndɪŋ /

UK / əˈstaʊndɪŋ /

C1
  • verb
  • To surprise someone greatly

digital

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US / ˈdɪdʒɪtl /

UK / ˈdɪdʒɪtl /

A1
  • adjecitve
  • Using electronic signals or computers

rough

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US / rʌf /

UK / rʌf /

A2
  • adjecitve
  • Causing or involving violence, force, and harm
  • (Of situations) tough; difficult to get through
  • Being imprecise, inexact, and not detailed
  • Not gentle or not soft
  • Having an uneven or not smooth surface
  • Raw and natural
  • (Of sea weather etc.) not calm with strong winds
  • Involving or causing sudden, forceful movements
  • adverb
  • In a manner that is difficult, or violent
  • noun
  • Violent, loud, and unpleasant person
  • Incomplete drawing or draft done lacking detail
  • verb
  • To make something less smooth

widely

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US / ˈwaɪdli /

UK / ˈwaɪdlɪ /

A1
  • adverb
  • To a large degree; over a large range
  • By or among a large number of people

use

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US / ju:s /

UK / ju:s /

A1
  • noun
  • Ability to employ something
  • Need to enable it to work
  • Permission to do something with something
  • Act of spending money
  • Operation of a machine for its function
  • verb
  • To have; to eat, drink, consume etc.
  • To need to operate or work
  • To operate a machine, e.g. a computer
  • To treat a person badly
  • To do something with, for a task or purpose

army

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US / 'ɑ:mɪ /

UK / ˈɑrmi /

A2
  • noun
  • Large group of soldiers organized to fight in wars

endosperm

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US / ˈendəʊspɜːm /

UK / ˈendoʊspɜːrm /

A1
  • noun
  • Nutritive tissue surrounding the embryo within seeds of flowering plants

here

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US / hɪə(r) /

UK / hɪr /

A1
  • adverb
  • In this place; at this location, position or time

lose

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US / lu:z /

UK / luz /

A1
  • verb
  • To be unable to keep in check or control something
  • To decrease in value or quantity (e.g. weight)
  • To stop having certain qualities or abilities
  • To stop having or being entitled to
  • To fail to win something that is being contested
  • To be unable to find something you once had
  • To be dependent on someone (used with 'not')

kale

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US / keɪl /

UK / keɪl /

C2
  • noun
  • Hardy cabbage with coarse curly leaves

new

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US / nju: /

UK / nu, nju /

A1
  • adjecitve
  • Not old, recently born, built or made
  • Being or doing something for the first time
  • Not felt, seen or known previously
  • Having been recently bought or obtained

strategy

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US / 'strætədʒɪ /

UK / ˈstrætədʒi /

A2
  • noun
  • Careful plan or method for achieving a goal
  • other
  • Branch of military dealing with command

showy

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US / ˈʃəʊi /

UK / ˈʃoʊi /

C2
  • adjecitve
  • Tasteless and extravagant display

try

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US / traɪ /

UK / traɪ /

A1
  • noun
  • Act of putting the ball over the rugby goal line
  • verb
  • To make an effort, to attempt to do something
  • To examine someone or something in a court of law
  • To test to see if it is good or you like it
  • To make a person go through hardship; test
  • To examine something to see if it works

corn

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US / kɔ:n /

UK / kɔrn /

B1
  • noun
  • Small, painful hard spot on the foot
  • Plant with many yellow seeds used as food

carbon

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US / 'kɑ:bən /

UK / ˈkɑrbən /

B1
  • noun
  • Chemical element with an atomic number of 6

code

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US / kəʊd /

UK / kod /

A2
  • noun
  • A password made of a set of letters or numbers
  • Set of rules for behavior
  • A secret language using secret symbols
  • Written part of a computer program
  • verb
  • To express information in a series of numbers
  • To write a secret message using secret symbols
  • To write programs using computer languages

plus

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US / plʌs /

UK / plʌs /

A2
  • noun
  • A benefit or advantage
  • preposition
  • In addition; add
  • In addition to; Indicates a number above
  • Having a value greater than zero

poop

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US / pu:p /

UK / pup /

C2
  • noun
  • Feces
  • verb
  • To defecate

reproductive

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US / ˌri:prəˈdʌktɪv /

UK / ˌriprəˈdʌktɪv /

B1
  • adjecitve
  • Concerning the process of making children
  • Relating to having children, young, or new plants

ovule

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US / ˈɒvjuːl /

UK / ˈoʊvjuːl /

A1
  • noun
  • Small body that contains the female germ cell of a plant; develops into a seed after fertilization;

too

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US / tu: /

UK / tu /

A1
  • adverb
  • In addition, also; with emphasis
  • Say that something is more than you want

appear

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US / ə'pɪə(r) /

UK / əˈpɪr /

A1
  • verb
  • To be seen, become visible; come into sight
  • To seem to be
  • To act in a play, movie, or be mentioned in media

after

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US / 'ɑ:ftə(r) /

UK / ˈæftɚ /

A1
  • adverb
  • Later than another time, or behind something
  • conjunction
  • Following something before
  • preposition
  • When an event happened or time has passed

container

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US / kənˈteɪnə(r) /

UK / kənˈtenɚ /

A2
  • noun
  • An object that can be used to hold things

enclose

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US / ɪnˈkləʊz /

UK / ɪnˈkloʊz /

B1
  • verb
  • To place something in a package or envelope
  • To surround something

diversification

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US / daɪˌvɜ:sɪfɪ'keɪʃn /

UK / dɪˌvɜ:sɪfɪ'keɪʃn /

B2
  • noun
  • Offering or owning a variety of goods and services

episode

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US / 'epɪsəʊd /

UK / ˈɛpɪˌsod /

B1
  • noun
  • One separate event in a series of events
  • Show which is part of a larger story

many

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US / 'menɪ /

UK / ˈmɛni /

A1
  • determiner
  • Used to refer a large number of things

partnership

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US / ˈpɑ:tnəʃɪp /

UK / ˈpɑ:rtnərʃɪp /

B1
  • noun
  • Shared business relationship with someone
  • Working with others for some purpose

reward

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US / rɪ'wɔ:d /

UK / rɪˈwɔrd /

A2
  • noun
  • Money given for information about criminals
  • verb
  • To give something because of someone's good work
  • To give someone money for helping the police
  • To give someone satisfaction for what they did

will

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US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it
  • Subtitles section
  • There's this plant called Jewelweed, also known as Touch-Me-Not.
  • Why, you ask?
  • Because when you touch its seed pods, they have a habit of exploding.
  • The seed pods fling the Jewelweed seeds into the air to spread them far and wide.
  • And then there's the seeds of the Osiris plant, which develop faster if they've been roughed up a little inside a bird's digestive system.
  • After that, they tend to try and grow wherever the bird, uh, drops them.
  • Foxtail seeds hitch a ride on animals' fur.
  • Maple tree fruits surf on the wind.
  • Oak tree fruits, or acorns, sprout where squirrels bury them.
  • Are you sensing a pattern here?
  • The pattern is, plants move.
  • They migrate and spread over the globe, just not in the same ways that animals do.
  • No, sometimes it is via those animals.
  • Throughout land plants' 500-million-year-long tenure on Earth, they've devised a lot of clever ways to get around.
  • And when seeds, flowers, and fruit came onto the scene?
  • Well, that was a major plant moment.
  • Hi, I'm Alexis, and this is Crash Course Botany.
  • In
  • The last episode, we explored bryophytes and seedless vascular plants, some of the earliest plants to thrive on land.
  • Today, we're looking at the evolution of the seed, which came about 150 million years later and changed everything.
  • When gymnosperms, or seed-bearing plants, appeared, they opened up entirely new habitats and ecological opportunities for plants.
  • And then angiosperms, which bear flowers and fruits, came up with even more innovations for protecting and spreading those seeds.
  • Because of their evolutionary advantages, these two types of plants dominate Earth's ecosystems, shaping how virtually every other organism lives and interacts.
  • And they are by far the most common types of plants you're likely to interact with in your daily life.
  • Before gymnosperms, plants could live on land, but they needed a pretty wet environment.
  • Because in their reproductive cycle, a plant's sperm could only reach an egg by swimming.
  • But the evolution of pollen, which coincided with the evolution of seeds, meant seed plants were no longer dependent on water for reproduction.
  • That's because pollen, which produces not only allergies, but also plant sperm, could travel by wind rather than water.
  • So plants were able to expand into habitats previously inaccessible to them.
  • And all of this happened very gradually, as new types of plants built upon and tweaked what came before.
  • Kind of like how newer phones have more powerful cameras, or let you turn your face into a unicorn, but they still have the same foundational features of older phones.
  • You still need the part that lets you make phone calls.
  • You see, previously existing plants like ferns had produced spores, or single cells crucial for the plant's reproduction.
  • These tiny cells grow in special structures on the leaves called sporangia.
  • And progymnosperms, which evolved about 390 million years ago, preceding gymnosperms, still use spores to reproduce.
  • But we can see from fossils that progymnosperms started making two different types of sporangia.
  • When the progymnosperms evolved into the gymnosperms, about 70 million years later, they specialized those two sporangia.
  • One produced little spores like their plant's elders had.
  • But the other produced one big spore, protected by a layer of tissue called the seed coat.
  • This structure as a whole, sporangium plus spore plus seed coat, is called an ovule.
  • And when it grows up and matures, it becomes a seed.
  • But let's unpack that.
  • There's the sporangium that makes little spores.
  • These become pollen, which produces sperm.
  • And then there's the sporangium that makes a big spore.
  • This spore transforms into the next generation of the plant, and then produces an egg.
  • When pollen lands on an ovule, it sends its sperm down a little tube to fertilize the egg.
  • Inside the ovule, the fertilized egg grows into an embryo, which will eventually become a baby plant.
  • And once it contains an embryo like this, the ovule graduates into a seed.
  • The evolution of seeds created a huge advantage, because now embryos were protected and nurtured in their cozy seed coats.
  • This let them travel safely and well-fed as they were dispersed, whether by bird or wind or explosion.
  • And that let these plants spread farther with more reproductive success than others had up to this point.
  • Now, there are a few different types of these seed-bearing gymnosperms, many of which are still around today.
  • Cycids are one of the oldest gymnosperm groups.
  • They were around even before the dinosaurs.
  • But they grow very slowly and only in specific habitats, so most species are considered endangered today.
  • Then there are the gymnosperms you're likely to recognize.
  • Conifers include trees like pines, cedars, firs, and cypresses that make scale or needle-like leaves.
  • They're often adapted to harsh environments like freezing mountaintops or barren deserts.
  • And there's a gymnosperm category you might know by scent, the ginkgo.
  • These trees have been known to produce stinky seeds, but they're widely grown in cities around the world because of their resistance to pollution.
  • The last of the gymnosperm groups to evolve were the nidophytes, which include species like phedra, the plant that produces the decongestant ephedrine, and nidum, an important part of Indonesian cuisine.
  • So now, let's visit the next branch on the plant family tree, the angiosperms.
  • They appeared about 85 million years after the gymnosperms, or around 275 million years ago.
  • Angiosperm means vessel, seed, because their seeds are enclosed in a special container or vessel.
  • The container is a plant ovary or reproductive organ, and when it ripens, it becomes a fruit.
  • And the ovary is part of a broader reproductive structure completely unique to angiosperms, the flower.
  • So to repeat, flowers are reproductive structures, and fruit are ripe plant ovaries.
  • Beautiful and tasty.
  • Flowers and fruits helped the angiosperms reach a level of evolutionary success and ecological dominance that hasn't been repeated in the history of plants.
  • There are around 300,000 species of angiosperms today, compared to just 1,000 gymnosperm species.
  • That's a ratio of 300 to 1. And unless you're in the Arctic Circle, nearly every plant in your local environment is an angiosperm.
  • Oaks, cacti, grasses, orchids.
  • Almost every plant you eat is an angiosperm too, like kale, rice, apples, carrots, and soybeans.
  • But the amazing array of flowering and fruiting plants we have today wouldn't have been possible without those early gymnosperm seeds.
  • Until recently, we didn't really know when the angiosperms came about.
  • But that all changed thanks to a prehistoric forest fire, a modern-day microscope, and some brilliant thought nests.
  • Let's head to the Thought Bubble.
  • Until the 1980s, scientists hadn't found a ton of flower fossils that could tell them about early angiosperms.
  • And the ones they had found weren't great.
  • Since flowers are so soft, they tend to go splat when they become fossils.
  • So we lose a lot of valuable information about their structure.
  • Enter Dr. Elsa Marie Friis, a Danish paleobotanist.
  • Friis and a colleague were exploring a quarry in Sweden when they discovered that little bits of charcoal in the rock contained countless tiny flower fossils.
  • They determined that a forest fire swept through the site around 85 million years before, turning the flowers to charcoal.
  • This was great news for the botanist because the charcoal hardened the soft features of the flowers, preserving them in exquisite three-dimensional detail.
  • So they developed a method for carefully extracting and cleaning the two-millimeter flower fossils and use the microscopes to visualize all the tiny details of their structures.
  • What they saw was astounding!
  • Diverse and complex flowers that were 85 million years old, yet recognizable as belonging to the modern-day group that includes witch hazels and peonies.
  • Their findings revealed this group of flowering plants was thriving way earlier than previously thought.
  • And Dr. Friis continues her work on charcoal flowers, discovering older and older fossils that can help us understand more about the meteoric rise of the angiosperms.
  • Thanks, Thought Bubble!
  • So flowers, whether from millions of years ago or today, all have structures that enable them to flourish on land.
  • A typical flower consists of four types of organs that are arranged in concentric circles.
  • In the outermost circle are the sepals, which typically resemble leaves and protect the flower bud when it's closed.
  • Next come the petals, beautiful, showy organs that attract animal pollinators.
  • After the petals come the stamens, the reproductive organs that produce pollen.
  • And the innermost circle contains the pistil, with the ovary and ovules at its base.
  • This combination of organs allowed the angiosperms to evolve specialized flower shapes to attract and reward pollinators.
  • Having an army of insects, bats, and birds accurately shuttling pollen between your flowers is a way more efficient reproduction strategy than hoping your pollen lands in the right place when it blows by on the wind.
  • It's like putting the right address on an envelope, not just the zip code.
  • So angiosperms evolved the staggering diversity of flower shapes and sizes we see today to maximize this pollination potential.
  • And similarly, fruits evolved to have scents that attract particular animals to eat them.
  • Those animals then move to another location where, hopefully, the new plant won't be in competition with the old one, and they poop out the seeds inside that fruit.
  • It's not pretty, but it's effective.
  • Over about 50 million years, the rise of angiosperms triggered what scientists consider an explosive increase in the number of different land-dwelling species, both plant and animal.
  • This is largely because interactions between angiosperms, pollinators, and herbivores drove a process called co-evolution, where each group influenced the other's development and diversification.
  • But it wasn't only their appealing flowers and fruits that made angiosperms so successful.
  • They also developed ways to harness photosynthesis more efficiently and outgrow other plants.
  • Their leaves gradually evolved to have more veins that transport water throughout the plant.
  • So when their stomata, or pores on their leaves, opened to absorb carbon dioxide in the air, they didn't lose as much water, and could keep growing steadily.
  • On top of that, angiosperms refined a process of reproduction called double fertilization, which essentially allows one sperm cell to fertilize an egg and make an embryo, while a second sperm cell creates tissue called endosperm that can provide nutrients to that embryo.
  • This made the seeds more likely to grow into successful plants.
  • And corn, wheat, and rice, by the way, are so nutritious to us because they're basically all endosperm.
  • At the end of the day, while angiosperms may be the most abundant plant type on Earth, plants like bryophytes, seedless vascular plants, and gymnosperms still exist and thrive.
  • That's because one plant type isn't better or more evolved than another.
  • They're all different and have their own ways of surviving in different environments.
  • Though, yes, seeds changed everything, and flowers and fruits make my life better, there's room for all of us on this big green planet.
  • And that completes our tour through the major groups of plants.
  • Next, we'll explore the many ways humans and other organisms interact with their botanical brethren.
  • Hey, before we go, let's branch out.
  • What's the main trigger for giant sequoia trees to release their seeds?
  • It's getting hot in here.
  • Find the answer in the comments.
  • Thanks for watching this episode of Crash Course Botany, which was filmed at the Demir Farizowicz Studio and made in partnership with PBS Digital Studios and Nature.
  • If you want to help keep Crash Course free for everyone, forever, you can join our community on Patreon.