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Condor Females Don't Need a Male to Hatch Chicks

Video vocabulary

publish

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US / 'pʌblɪʃ /

UK / ˈpʌblɪʃ /

A2
  • verb
  • To prepare and make available a book magazine etc.
  • To release information to the general public

parthenogenetic

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US / ˌpɑːθənəʊdʒəˈnetɪk /

UK / ˌpɑːrθənoʊdʒəˈnetɪk /

A1
  • adjecitve

million

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US / ˈmɪljən /

UK / ˈmɪljən /

A1
  • number
  • 1,000,000

matter

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US / 'mætə(r) /

UK / ˈmætɚ /

A1
  • noun
  • Material all things are made of that fills space
  • Problem or reason for concern
  • verb
  • To be of great importance; to count

global

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US / ˈgləʊbl /

UK / ˈgloʊbl /

A2
  • adjecitve
  • Concerning, involving, affecting all of something
  • Of, affecting, or involving the entire world

eat

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US / i:t /

UK / it /

A1
  • verb
  • To put food in your mouth

contain

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US / kənˈteɪn /

UK / kənˈten /

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

bolster

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US / 'bəʊlstə(r) /

UK / ˈbolstɚ /

B2
  • verb
  • To prop up or support (e.g. a wall)

understanding

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US / ˌʌndəˈstændɪŋ /

UK / ˌʌndərˈstændɪŋ /

A1
  • adjecitve
  • Being sympathetic
  • noun
  • When you get the meaning correctly; comprehension
  • Knowledge about something or someone
  • verb
  • To know the meaning of language, what someone says

ultimately

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US / ˈʌltɪmətli /

UK / ˈʌltəmɪtli /

B1
  • adverb
  • Done or considered as the final and most important

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

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

specie

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US / 'spi:ʃi: /

UK / 'spi:ʃɪ /

B1
  • noun
  • Singular of species

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

sex

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US / seks /

UK / sɛks /

A2
  • noun
  • State of being male or female
  • Physical activity by which we produce babies

president

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US / ˈprezɪdənt /

UK / ˈprɛzɪdənt,-ˌdɛnt /

A2
  • noun
  • Person in charge of a country, or organization

pool

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US / pu:l /

UK / pul /

A2
  • noun
  • Amount collected, e.g. money, for some purpose
  • Small body of still water
  • Game of hitting balls on a table with long sticks
  • Small area of water for swimming bound by walls
  • verb
  • (Of a liquid) to collect into a small area
  • To make a collection of (resources, money etc.)

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

first

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US / fɜ:st /

UK / fɚst /

A1
  • adjecitve
  • 1st; Coming before all others in time or place
  • noun
  • Something that has not happened before
  • Position of the winner of a competition

dead

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US / ded /

UK / dɛd /

A1
  • adjecitve
  • Not alive
  • Being bored or not interested
  • Unable to operate because electricity etc. ran out
  • Being unable to feel, physically or emotionally
  • adverb
  • Completely; absolutely

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

gulp

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US / ɡʌlp /

UK / ɡʌlp /

B2
  • noun
  • Swallowing liquid very quickly
  • verb
  • To swallow or drink quickly

force

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US / fɔ:s /

UK / fɔrs, fors /

A1
  • noun
  • Group of persons trained for military action; army
  • Pressure; attraction
  • The use of physical strength/violence to persuade
  • verb
  • To use physical strength or violence to persuade

egg

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US / eg /

UK / ɛɡ /

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

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

access

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US / 'ækses /

UK / ˈæksɛs /

A2
  • noun
  • Way to enter a place, e.g. a station or stadium
  • verb
  • To be able to use or have permission to use

select

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US / sɪ'lekt /

UK / sɪˈlɛkt /

A2
  • verb
  • To choose a suitable thing from a group

house

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US / haʊs /

UK / haʊs /

A1
  • noun
  • Place where a specific activity or business occurs
  • Building in which a family, person lives
  • verb
  • To give someone a place to live
  • To contain or store something

overall

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US / ˌəʊvər'ɔ:l /

UK / ˈovɚˌrɔl /

A2
  • adjecitve
  • Viewed as a whole; in general, not as details

per

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US / pə(r) /

UK / pɚ /

A2
  • preposition
  • In the manner directed or suggested
  • For each; during each

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

capability

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US / ˌkeɪpəˈbɪləti /

UK / ˌkeɪpə'bɪləti /

B1
  • noun
  • Means, ability, or potential to do something

consume

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US / kən'sju:m /

UK / kənˈsum /

A2
  • verb
  • To eat, drink, buy or use up something
  • To take all your energy; focus the attention

nutrient

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US / ˈnju:triənt /

UK / ˈnutriənt /

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

question

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US / 'kwestʃən /

UK / ˈkwɛstʃən /

A1
  • noun
  • Issue or problems you are dealing with
  • What you ask about; issue
  • verb
  • To ask for or try to get information
  • To have or express concerns or uncertainty

shoot

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US / ʃu:t /

UK / ʃut /

A2
  • noun
  • Emerging new part of a plant
  • verb
  • To kick or throw a ball at a goal
  • To fire a gun; injure or kill someone with a gun
  • To (cause to) fly away forcefully
  • To use a camera to record a film/take a photograph

fact

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US / fækt /

UK / fækt /

A1
  • noun
  • Something that is known or proved to be true

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

individual

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US / ˌɪndɪˈvɪdʒuəl /

UK / ˌɪndəˈvɪdʒuəl /

A2
  • adjecitve
  • Made for use by one single person
  • Having a distinct manner different from others
  • noun
  • Single person, looked at separately from others

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

ocean

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US / 'əʊʃn /

UK / ˈoʃən /

A2
  • noun
  • Large body of salt water; a large sea

wing

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US / wɪŋ /

UK / wɪŋ /

A2
  • noun
  • Part of an animal's body that is used for flying
  • One of the two parts on the side of a plane, bird
  • verb
  • To fly to a place

fatal

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US / ˈfeɪtl /

UK / ˈfetl /

B1
  • adjecitve
  • Causing death; having very bad consequences
  • Causing negative results

endanger

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US / ɪn'deɪndʒə(r) /

UK / ɛnˈdendʒɚ /

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

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

shrank

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US / ʃræŋk /

UK / ʃræŋk /

B1
  • verb
  • To make or become smaller than it was before

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

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

case

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US / keɪs /

UK / kes /

A1
  • noun
  • Container used to carry things, e.g. clothes
  • Set of facts about a crime
  • Set of facts about an event
  • Example or instance of something
  • verb
  • To find out about a place, as in planning to steal

conservation

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US / ˌkɒnsəˈveɪʃn /

UK / ˌkɑ:nsərˈveɪʃn /

B1
  • noun
  • Protecting the environment or a species
  • Act of keeping in reserve

week

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US / wi:k /

UK / wik /

A1
  • noun
  • Period of seven days from Sunday to Saturday

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

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

iron

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US / ˈaɪən /

UK / ˈaɪərn /

B1
  • adjecitve
  • Being very tough, strong, and determined
  • noun
  • Heavy metal device heated to smooth clothes
  • Golf club with a metal head
  • Strong hard metal used to make steel
  • verb
  • To use a hot flat-based machine to smooth clothes

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

different

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US / ˈdɪfrənt /

UK / ˈdɪfrənt /

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

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)

again

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US / ə'ɡen /

UK / əˈɡɛn /

A1
  • adverb
  • One more time, once more

happen

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US / 'hæpən /

UK / ˈhæpən /

A1
  • verb
  • To take place or occur

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

diversity

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US / daɪ'vɜ:sətɪ /

UK / dɪˈvə:sɪti, daɪ- /

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

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

mutation

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US / mju:'teɪʃn /

UK / mjuˈteʃən /

B2
  • noun
  • Change that changes genetic structure

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)

female

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US / 'fi:meɪl /

UK / ˈfiˌmel /

A2
  • adjecitve
  • Person of the sex that gives birth to babies

critical

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US / ˈkrɪtɪkl /

UK / ˈkrɪtɪkəl /

A2
  • adjecitve
  • Making a negative judgment of something
  • Being important or serious; vital; dangerous
  • Most important part

also

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US / 'ɔ:lsəʊ /

UK / ˈɔlso /

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

parent

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US / 'peərənt /

UK / ˈpɛrənt, ˈpær- /

A1
  • noun
  • Person's, animal's mother or father
  • Something creating other things of the same kind

hungry

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US / ˈhʌŋgri /

UK / ˈhʌŋɡri /

B2
  • adjecitve
  • Feeling a need or want to eat food
  • Being eager to get or do something

mate

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US / meɪt /

UK / met /

B1
  • noun
  • A friend who you work, live, or go to school with
  • Partner in a (sexual) relationship
  • One of a matched pair e.g. a shoe or glove
  • A kind of officer on a ship
  • other
  • Person your wish to, or are married to
  • verb
  • To pair a male and female so they have children
  • To join or fit two things together

genetic

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US / dʒəˈnetɪk /

UK / dʒəˈnɛtɪk /

B1
  • adjecitve
  • Of, relating to, or controlled by genes

diminish

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US / dɪˈmɪnɪʃ /

UK / dɪˈmɪnɪʃ /

B1
  • verb
  • To make something smaller or less important
  • To imply someone's reputation is less good
  • To become or cause to become less in size, value

commercial

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US / kəˈmə:ʃəl /

UK / kəˈmɚʃəl /

B1
  • adjecitve
  • noun
  • Radio or television advertisement

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

researcher

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US / rɪ'sɜ:tʃə(r) /

UK / rɪˈsətʃɚ /

A2
  • noun
  • Someone who works to find new facts and ideas

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

snake

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US / sneɪk /

UK / snek /

B1
  • noun
  • An animal with a long body, no arms or legs
  • verb
  • To move like a snake
  • To wind in a long path like the shape of a snake

program

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US / 'prəʊɡræm /

UK / ˈproˌɡræm, -ɡrəm /

A1
  • noun
  • Small book of events in a play, concert or movie
  • A plan or schedule of events
  • Series of classes at a college or university
  • A computer application
  • TV show
  • verb
  • To make someone act or think in a certain way
  • To write computer code for a piece of software

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

filter

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US / 'fɪltə(r) /

UK / ˈfɪltɚ /

B1
  • noun
  • Device to remove certain types of light, sound
  • Device to remove unwanted things from liquid, gas
  • verb
  • To remove certain types of light, sound
  • To remove unwanted substances from a liquid or gas

than

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US / ðən /

UK / ðən /

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

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

pull

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US / pʊl /

UK / pʊl /

A1
  • noun
  • Act of breathing in smoke, as from a pipe
  • Force something has that draws other things to it
  • Using your hands to move something to you
  • verb
  • To breathe in smoke, as from a pipe
  • To hold something and move it toward you
  • To remove something by force

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

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

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

entire

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US / ɪn'taɪə(r) /

UK / ɛnˈtaɪr /

A2
  • adjecitve
  • Complete or full; with no part left out; whole

surface

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US / 'sɜ:fɪs /

UK / ˈsɚfəs /

A2
  • adjecitve
  • Of the top layer; not deep or meaningful
  • noun
  • Top layer of the ground or of water
  • Nature or emotions that show, but may not be true
  • Outside or upper layer of something
  • verb
  • To give (road) a top layer
  • To appear after being hidden, unseen, or unknown
  • To come to the top of something; emerge
  • To come to the top level of water, mud, etc.

three

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US / θri: /

UK / θri /

A1
  • number
  • Number 3

restore

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US / rɪˈstɔ:(r) /

UK / rɪˈstɔr, -ˈstor /

B1
  • verb
  • To return a thing to its original condition

ecosystem

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US / ˈi:kəʊsɪstəm /

UK / ˈɛkoˌsɪstəm, ˈiko- /

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

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

bad

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US / bæd /

UK / bæd /

A1
  • adjecitve
  • Not good; wrong
  • Lacking in good morals; evil
  • No longer fresh; spoiled

brant

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US / ˈbrænt /

UK / brænt /

A1
  • other
  • Small dark geese that breed in the north and migrate southward

able

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US / 'eɪbl /

UK / ˈebəl /

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

suggest

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US / səˈdʒest /

UK / səɡˈdʒɛst, səˈdʒɛst /

A1
  • verb
  • To mention something that could be done; propose

krill

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US / krɪl /

UK / krɪl /

A1
  • other
  • Shrimp-like planktonic crustaceans; major source of food for e.g. baleen whales

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

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

measure

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US / ˈmeʒə(r) /

UK / ˈmɛʒɚ /

A1
  • noun
  • Plan to achieve a desired result
  • Tool used to calculate the size of something
  • verb
  • To determine the value or importance of something
  • To calculate size, weight or temperature of

genome

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US / ˈdʒi:nəʊm /

UK / ˈdʒi:noʊm /

B2
  • noun
  • Complete set of genetic material in an organism

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

photograph

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US / ˈfəʊtəgrɑ:f /

UK / ˈfoʊtəgræf /

A1
  • noun
  • Picture taken with a camera
  • verb
  • To take a picture with a camera

outro

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US / 'u:trəʊ /

UK / 'u:troʊ /

A1
  • noun
  • The concluding section of a piece of music or a radio or television program.

whether

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US / ˈweðə(r) /

UK / ˈhwɛðɚ, ˈwɛð- /

A1
  • conjunction
  • If something will happen or not

support

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US / səˈpɔ:t /

UK / səˈpɔrt, -ˈport /

A1
  • noun
  • Assistance or advice given to someone
  • Evidence that helps prove something is true
  • A thing to hold up or prevent from falling down
  • verb
  • To give assistance or advice to someone
  • To help prove or show that something is true
  • To hold up or prevent from falling down

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

not

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US / nɒt /

UK / nɑt /

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

food

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US / fu:d /

UK / fud /

A1
  • noun
  • What people and animals eat to live
  • Things taken in by plants to maintain life
  • A particular style or type of cooking, e.g. Asian

tough

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US / tʌf /

UK / tʌf /

A2
  • adjecitve
  • (Of food) difficult to chew or bite through
  • Very difficult to do or deal with
  • Having strict standards
  • Being firm and not easily bent or broken
  • Being strong physically or mentally
  • Being difficult to persuade
  • Capable of violence

potentially

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US / pə'tenʃəlɪ /

UK / pəˈtɛnʃəlɪ /

B1
  • adverb
  • That could happen or become reality

decent

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US / ˈdi:snt /

UK / ˈdisənt /

B1
  • adjecitve
  • Being fairly good; acceptable

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

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

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

north

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US / nɔ:θ /

UK / nɔ:rθ /

A1
  • adjecitve
  • Coming from the opposite direction to the south
  • noun
  • Direction to your left when facing the rising sun

blue

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US / blu: /

UK / blu /

A1
  • adjecitve
  • Color of the clear sky
  • Feeling sad or down

tiny

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US / 'taɪnɪ /

UK / ˈtaɪni /

A2
  • adjecitve
  • Very, very small

turkey

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US / ˈtɜ:ki /

UK / ˈtɜ:rki /

C1
  • noun
  • Edible bird resembling a large chicken
  • other
  • An event that fails badly or is totally ineffectual
  • Flesh of large domesticated fowl usually roasted

mexico

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US / 'meksɪkəʊ /

UK / 'meksɪkoʊ /

A1
  • proper noun
  • A country in southwestern North America, with extensive coastlines on the Gulf of Mexico and the Pac

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

attach

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US / ə'tætʃ /

UK / əˈtætʃ /

A2
  • verb
  • To be associated or connected with

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

research

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US / rɪ'sɜ:tʃ /

UK / rɪˈsɚtʃ, ˈriˌsɚtʃ /

A2
  • noun
  • Study done to discover new ideas and facts
  • Work done to find or discover knowledge
  • verb
  • To study in order to discover new ideas and facts

good

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US / ɡʊd /

UK / ɡʊd /

A1
  • adjecitve
  • Proper, appropriate or right
  • (Of an amount) enough; plenty
  • Excellent; high quality
  • Acting well or properly; of moral character
  • In a positive or happy emotional state
  • noun
  • Advantage or benefit

duplicate

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US / ˈdju:plɪkeɪt /

UK / ˈdu:plɪkeɪt /

B2
  • noun
  • Something that is the exact same thing as another
  • verb
  • To make an exact copy of a thing

but

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US / bət /

UK / bʌt,bət /

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

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

metric

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US / ˈmetrɪk /

UK / ˈmɛtrɪk /

B1
  • adjecitve
  • Based on the meter as a standard of measurement

breeding

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US / ˈbri:dɪŋ /

UK / ˈbridɪŋ /

A2
  • noun
  • Way you were brought up, e.g. having good manners
  • verb
  • To create situations for a (bad) thing to happen
  • To produce baby animals of specific kinds
  • To bring up or raise children (derogatory use)

low

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US / ləʊ /

UK / lo /

A1
  • adjecitve
  • Having a small quantity, supply, or amount
  • Being unhappy or unpleasant in attitude
  • Not high; being near the ground, or bottom
  • (Of a voice, sound) being soft; quiet
  • noun
  • Situation of not having a lot of something

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

fashion

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US / 'fæʃn /

UK / ˈfæʃən /

A2
  • noun
  • Style of dress or activity popular at some time
  • Industry that creates new styles of clothes
  • Way of behaving; manner
  • Trend that is popular at a given time
  • Way of doing something; manner
  • verb
  • To make things into a particular shape

feed

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US / fi:d /

UK / fid /

A2
  • noun
  • Food given to animals
  • verb
  • To give food, e.g. to animals or a baby
  • To push something through an opening
  • To provide necessary supplies to

without

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US / wɪˈðaʊt /

UK / wɪðˈaʊt, wɪθ- /

A1
  • preposition
  • Not with; not having

six

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US / sɪks /

UK / sɪks /

A1
  • number
  • 6

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

they

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US / ðeɪ /

UK / ðe /

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

neither

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US / ˈnaɪðə(r) /

UK / ˈniðɚ, ˈnaɪ- /

A2
  • adjecitve
  • Not one or the other not either none of two things
  • adverb
  • Similarly not, also not
  • conjunction
  • Not in either case
  • determiner
  • Not one or the other
  • pronoun
  • Not either one

male

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US / meɪl /

UK / ˈmel /

A2
  • adjecitve
  • Characteristic of boys or men
  • noun
  • A member of the sex that fertilizes eggs

device

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US / dɪˈvaɪs /

UK / dɪˈvaɪs /

A2
  • noun
  • Object, machine, or equipment for a specific use
  • Method of doing something; a way

take

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US / teɪk /

UK / tek /

A1
  • noun
  • Filming of a single scene for TV or the movies
  • verb
  • To accept something that is offered
  • To use a method of traveling, e.g. a bus or train
  • To use a camera to make (a photo)
  • To pick up something and go away with it
  • To study a subject in school
  • To attempt to pass (an exam)
  • To require a certain amount of time, money, space

removal

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US / rɪ'mu:vl /

UK / rɪˈmuvəl /

A2
  • noun
  • Act of getting rid of something completely
  • Act of making someone leave their job or position
  • Act of moving to a different place or position

dioxide

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US / daɪˈɒksaɪd /

UK / daɪˈɑksaɪd /

B2
  • noun
  • An oxide containing two oxides per molecule

identical

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US / aɪˈdentɪkl /

UK / aɪˈdɛntɪkəl /

B1
  • adjecitve
  • The same in every way

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

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

sword

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US / sɔ:d /

UK / sɔrd /

B1
  • noun
  • A long metal weapon with a sharp point and edge

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

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

canada

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US / 'kænədə /

UK / ˈkænədə /

A1
  • proper noun
  • A country in northern North America, the second largest country in the world; population 35,900,000

mouth

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US / maʊθ /

UK / maʊθ /

A1
  • noun
  • Hole in the face used for eating and talking
  • Opening of a container such as a bottle
  • Area where a river enters a large body of water
  • verb
  • To say words without speaking

lizard

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US / ˈlɪzəd /

UK / ˈlɪzərd /

B2
  • noun
  • Reptile with scales and a long body and tail

estimate

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US / 'estɪmət /

UK / ˈɛstəˌmet /

A2
  • noun
  • Guess or calculation of cost, size or value
  • verb
  • To guess or calculate the cost, size or value of

scientist

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US / ˈsaɪəntɪst /

UK / ˈsaɪəntɪst /

A2
  • noun
  • Person who is trained in a science

raise

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US / reɪz /

UK / rez /

A1
  • noun
  • Increase in a bet above another when playing cards
  • Pay increase
  • verb
  • To increase a bet above another when playing cards
  • To gather donations for a cause or charity
  • To bring up and educate a child to maturity
  • To bring a dead person to life
  • To increase a quantity, size, intensity or price
  • To lift (e.g. your hand) to a higher position
  • To mention a topic /issue for discussion; bring up
  • To increase (salary, etc.)
  • To grow or care for plants or animals

conventional

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US / kən'venʃənl /

UK / kənˈvɛnʃənəl /

B2
  • adjecitve
  • Following the common attitudes and practices

conveniently

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US / kən'vi:njəntlɪ /

UK / kənˈvinjəntlɪ /

A2
  • adverb
  • In a way that takes little effort or trouble

baleen

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US / bə'li:n /

UK / bə'li:n /

C2
  • noun
  • Horny material from the upper jaws of some whales

appetite

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US / 'æpɪtaɪt /

UK / ˈæpɪˌtaɪt /

B1
  • noun
  • Feeling of hunger or desire for something

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

discovery

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US / dɪ'skʌvərɪ /

UK / dɪˈskʌvəri /

A2
  • noun
  • Learning something for the first time

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

theoretically

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US / ˌθɪə'retɪklɪ /

UK / ˌθiəˈretɪkli /

B2
  • adverb
  • As regards ideas that could be true

their

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US / ðɛː /

UK / ðer /

A1
  • determiner
  • Belonging to them

huge

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US / hju:dʒ /

UK / hjudʒ /

A2
  • adjecitve
  • Very very large

figure

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US / ˈfiɡə /

UK / ˈfɪɡjɚ /

A1
  • noun
  • Your body shape
  • Numbers in a calculation
  • Doll-like thing meant to represent a person
  • Picture or diagram giving information in a text
  • Person who is very important or famous
  • Shape of a person seen indistinctly or in outline
  • Amount that is expressed in numbers
  • verb
  • To appear in a game, play or event
  • To calculate how much something will cost
  • To understand after thinking; work out

due

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US / dju: /

UK / du, dju /

A1
  • adjecitve
  • When something is required or expected
  • Owed to a person as a right
  • noun
  • Something you deserve; something you can expect

paper

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US / ˈpeɪpə(r) /

UK / ˈpeɪpər /

A1
  • adjecitve
  • Not existing in reality, or done infrequently
  • Made from the material that we use to make books
  • noun
  • Academic writing or a talk on a specific topic
  • Written test
  • Newspaper
  • Pages of a book are made from this

movement

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US / ˈmu:vmənt /

UK / ˈmuvmənt /

A2
  • noun
  • Part of a piece of classical music
  • Group with a shared interest or goal
  • Group sharing the same idea to change society, art
  • Action you do when exercising, e.g. in a gym
  • Part of a piece of music

photosynthesis

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US / ˌfəʊtəʊˈsɪnθəsɪs /

UK / ˌfotoˈsɪnθɪsɪs /

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

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

pacific

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US / pə'sɪfɪk /

UK / pəˈsɪfɪk /

A1
  • adjecitve
  • Relating to or bordering the Pacific Ocean
  • Concerned with peace or of a peaceful nature

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

breed

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US / bri:d /

UK / brid /

A2
  • noun
  • Kind of / sort of
  • Particular kind of animal, e.g. a Labrador dog
  • verb
  • To create situations for a (bad) thing to happen
  • To produce baby animals of specific kinds
  • To have (children); bring up or raise children

chance

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US / tʃɑ:ns /

UK / tʃæns /

A1
  • adjecitve
  • Happening by luck; not planned
  • Taking a risk to try something
  • noun
  • The way something happens without planning
  • An opportunity; favorable circumstances, situation
  • The possibility that something will happen
  • verb
  • To occur just through luck; happen
  • To take a risk to try something

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

america

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US / ə'merɪkə /

UK / əˈmɛrɪkə /

A1
  • noun
  • The United States of America; North America and/or South America

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

harmful

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US / ˈhɑ:mfl /

UK / ˈhɑ:rmfl /

A2
  • adjecitve
  • Likely to cause damage or injury

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

thank

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US / θæŋk /

UK / θæŋk /

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

scishow

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US / /

UK / /

A1

prey

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US / preɪ /

UK / pre /

B1
  • noun
  • The victim of another person's aggression
  • other
  • The victim of another person's aggression
  • verb
  • To hunt (other animals) in order to eat them
  • To cause another to be a victim

parthenote

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US / ˈpɑːθənəʊt /

UK / /

A1
  • other
  • A cell resulting from parthenogenesis

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

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

though

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US / ðəu /

UK / ðo /

A1
  • adverb
  • Although, despite the fact that

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

phytoplankton

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US / faɪtəʊ'plæŋktən /

UK / ˌfaɪtoʊ'plæŋktən /

A1
  • noun
  • Photosynthetic or plant constituent of plankton; mainly unicellular algae

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

invertebrate

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US / ɪnˈvɜ:tɪbrət /

UK / ɪnˈvɜ:rtɪbrət /

B2
  • noun
  • Creature without a backbone, e.g. crabs or worms

journal

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US / ˈdʒə:nl /

UK / ˈdʒɚnəl /

B1
  • noun
  • A diary; record of what you do every day
  • Magazine of academic papers

intro

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US / ˈɪntrəʊ /

UK / ˈɪntroʊ /

A1
  • noun
  • Opening part of a text or piece of music

critically

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US / 'krɪtɪklɪ /

UK / ˈkrɪtɪklɪ /

A2
  • adverb
  • As part of the process of judging something
  • In a way that is serious or dangerous; vitally

back

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US / bæk /

UK / bæk /

A1
  • adjecitve
  • Farthest from the front e.g. in a classroom
  • adverb
  • Have returned to a place you were before
  • noun
  • The part of a chair that the upper body leans upon
  • Location at the rear of something
  • The reverse of side something
  • Area on the rear of your body
  • verb
  • To bet money on something
  • To go backwards in a car
  • To support and encourage someone or some cause

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

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

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

gps

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US / ˌdʒiː piː ˈes /

UK / ˌdʒiː piː ˈes /

A1
  • abbreviation
  • GPS is an acronym

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

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

observe

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US / əbˈzɜ:v /

UK / əbˈzɜ:rv /

A2
  • verb
  • To celebrate a particular holiday/religious event
  • To obey or follow laws, rules, or customs
  • To watch carefully; to make a comment

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

drone

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US / drəʊn /

UK / dron /

B2
  • noun
  • A remote controlled flying device
  • A continually dull or monotonous voice
  • Male bee
  • verb
  • To talk in a continually dull or monotonous voice

effort

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US / ˈefət /

UK / ˈɛfət /

A2
  • noun
  • Amount of work used trying to do something

any

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US / 'enɪ /

UK / ˈɛni /

A1
  • adjecitve
  • One, or some, no matter which
  • pronoun
  • One (thing) of many; some

ton

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US / tʌn /

UK / tʌn /

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

region

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US / 'ri:dʒən /

UK / ˈridʒən /

A2
  • noun
  • Part of a country, of the world, area, etc.

hurt

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US / hɜ:t /

UK / hɚt /

A1
  • noun
  • Mental, emotional, or physical pain
  • verb
  • To cause pain, damage or injury

heredity

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US / həˈredəti /

UK / həˈrɛdɪti /

C1
  • noun
  • Passing of features from parents to children

fertile

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US / 'fɜ:taɪl /

UK / ˈfɚtl /

B1
  • adjecitve
  • (Of imagination, etc.) working strongly; productive
  • Capable of producing children or young
  • Able to produce a lot of plants, e.g. food plants

bird

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US / bɜ:d /

UK / bɜ:rd /

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

most

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US / məʊst /

UK / most /

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

large

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US / lɑ:dʒ /

UK / lɑ:rdʒ /

A1
  • adjecitve
  • Big; of great size; broad, tall, wide, or fat

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

bristle

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US / ˈbrɪsl /

UK / ˈbrɪsəl /

B2
  • verb
  • To get upset with when someone says something bad

version

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US / ˈvə:ʃən /

UK / ˈvɚʒən, -ʃən /

A2
  • noun
  • Different way that someone interprets something
  • New or different form of something
  • An updated form of some software

monitor

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US / ˈmɒnɪtə(r) /

UK / ˈmɑ:nɪtə(r) /

A2
  • noun
  • A senior student at school
  • Electronic screen on which you can see images
  • verb
  • To observe and keep a record of something

couple

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US / 'kʌpl /

UK / ˈkʌpəl /

A2
  • noun
  • Two people in a romantic relationship
  • Two of something; two people; a pair
  • verb
  • To join something to something else
  • (Two animals) to engage in sexual relations
  • To put two people or things together

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

form

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US / fɔ:m /

UK / fɔrm /

A1
  • noun
  • Sports team or person's current winning record
  • Document you complete when making an application
  • Visible shape or style; type; kind
  • verb
  • To organize something such as a club or group
  • To develop; to come into a shape or substance
  • To make something into a particular shape

from

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US / frəm /

UK / frʌm, frɑm,frəm /

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

fish

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US / fɪʃ /

UK / fɪʃ /

A1
  • noun
  • Animal that swims and lives in water
  • verb
  • To go fishing with a net or hook

charismatic

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US / ˌkærɪzˈmætɪk /

UK / ˌkærɪzˈmætɪk /

B2
  • adjecitve
  • Able to attract and make them like you

two

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US / tu: /

UK / tu /

A1
  • number
  • 2

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

lurk

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US / lɜ:k /

UK / lɜ:rk /

B2
  • verb
  • To hide somewhere, e.g. to do something wrong

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

explain

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US / ɪk'spleɪn /

UK / ɪkˈsplen /

A1
  • verb
  • To make clear or easy to understand by describing

ever

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US / 'evə(r) /

UK / ˈɛvɚ /

A1
  • adverb
  • At any time; at all times in the future

gene

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US / dʒi:n /

UK / dʒin /

B1
  • noun
  • Part of cell controlling development of a thing

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

characterize

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US / 'kærəktəraɪz /

UK / ˈkærəktəˌraɪz /

A2
  • verb
  • To describe the qualities of person, place, thing

combine

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US / kəmˈbaɪn /

UK / kəmˈbaɪn /

A2
  • verb
  • To mix several things together to form one thing

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

team

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US / ti:m /

UK / tim /

A1
  • noun
  • Group of people working on a task together
  • Group of people playing a sport together

lay

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US / leɪ /

UK / le /

A2
  • adjecitve
  • Amateur; not being a trained priest
  • verb
  • To place a bet on a game outcome
  • (Of a bird, etc.) to produce eggs from its body
  • To put or set something down in a flat position
  • To set out things on (table) to prepare for a meal

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

usual

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US / ˈju:ʒuəl /

UK / ˈjuʒuəl /

A1
  • adjecitve
  • Being the way things occur most of the time

poop

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US / pu:p /

UK / pup /

C2
  • noun
  • Feces
  • verb
  • To defecate

healthy

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US / ˈhelθi /

UK / ˈhɛlθi /

A1
  • adjecitve
  • In good condition physically, or financially; well

carbon

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US / 'kɑ:bən /

UK / ˈkɑrbən /

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

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

here

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US / hɪə(r) /

UK / hɪr /

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

either

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US / ˈaɪðə(r) /

UK / ˈiðɚ, ˈaɪðɚ /

A1
  • adjecitve
  • One of two (used when there is a choice of two)
  • adverb
  • (After negative statements) likewise, in addition
  • conjunction
  • Used as the first of two connected things
  • determiner
  • Used as the first of two connected things
  • pronoun
  • The one or the other

colony

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US / 'kɒlənɪ /

UK / ˈkɑləni /

B2
  • noun
  • Group (bees, etc.) that live in the same place
  • Country/settlement controlled by another country

available

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US / əˈveɪləbl /

UK / əˈveləbəl /

A1
  • adjecitve
  • Present and able to be used
  • Able to be used at a scheduled time

weird

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US / wɪəd /

UK / wɪrd /

B1
  • adjecitve
  • Odd or unusual; surprising; strange

population

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US / ˌpɒpjuˈleɪʃn /

UK / ˌpɑpjəˈleʃən /

A2
  • noun
  • Number of people who live in a country, area etc.

complicated

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US / 'kɒmplɪkeɪtɪd /

UK / ˈkɑmplɪˌketɪd /

B1
  • adjecitve
  • Difficult to do, understand or use
  • verb
  • To make more difficult to do, understand or use

actually

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US / ˈæktʃuəli /

UK / ˈæktʃuəli /

A1
  • adverb
  • Used to add new (often different) information

science

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US / 'saɪəns /

UK / ˈsaɪəns /

A2
  • noun
  • Study of the physical world, based on facts

peak

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US / pi:k /

UK / pik /

B1
  • noun
  • Part of a cap that sticks out over your eyes
  • The very top of a mountain
  • State when something is at its best
  • Time or point when the highest level occurs
  • verb
  • To reach the highest or best point

massive

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US / ˈmæsɪv /

UK / ˈmæsɪv /

B1
  • adjecitve
  • Very big; large; too big

condor

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US / 'kɒndɔ:(r) /

UK / ˈkɑnˌdɔr,-dɚ /

B2
  • noun
  • Type of large black and bold headed vulture

allele

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US / əˈli:l /

UK / əˈlil /

A1
  • noun
  • Either of a pair (or series)

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

probably

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US / ˈprɒbəbli /

UK / ˈprɑbəbli /

A1
  • adverb
  • That is likely to happen or be true

chick

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US / tʃɪk /

UK / tʃɪk /

A2
  • noun
  • A baby bird

for

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US / fə(r) /

UK / fɔr,fə /

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

solid

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US / 'sɒlɪd /

UK / ˈsɑlɪd /

A2
  • adjecitve
  • Being able to be trusted; reliable
  • Substance that is hard or of fixed shape
  • Being well made and expected to last long
  • Having no space or emptiness inside
  • Being made entirely of one material or substance
  • noun
  • Something firm or hard; not gas or liquid

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

time

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US / taɪm /

UK / taɪm /

A1
  • noun
  • Speed at which music is played; tempo
  • Point as shown on a clock, e.g. 3 p.m
  • Number of hours, minutes needed to do something
  • Occasion when something happens
  • Period or occasion that something occurred
  • Period in history or the past
  • Something measured in minutes, hours, days, etc.
  • How long an event takes; duration
  • verb
  • To check speed at which music is performed
  • To choose a specific moment to do something
  • To measure how long an event takes, e.g. a race
  • To schedule something to occur at a specific moment

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)

amount

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US / ə'maʊnt /

UK / əˈmaʊnt /

A1
  • noun
  • Quantity of something
  • verb
  • To add up to a certain figure

extension

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US / ɪkˈstenʃn /

UK / ɪkˈstɛnʃən /

B1
  • adjecitve
  • Adding extra length
  • noun
  • Addition to something, e.g. a house
  • Suffix code of a computer file, e.g. .pdf, .jpg
  • Telephone for individual person, e.g. In an office
  • Something added to the end of something
  • Extra time allowed to complete something

animal

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US / ˈænɪml /

UK / ˈænəməl /

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

california

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US / ˌkælɪ'fɔ:njə, -'fɔ:ni:ə /

UK / ˌkælɪ'fɔ:rnjəˌ -'fɔ:rni:ə /

A1
  • noun
  • A state in the western United States on the Pacific; the rd largest state; known for earthquakes

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

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)

matthew

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US / ˈmæθjuː /

UK / ˈmæθju /

A1

report

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US / rɪ'pɔ:t /

UK / rɪˈpɔrt, ˈport /

A1
  • noun
  • Account of the necessary facts and information
  • The telling of news in the media
  • Official statement about something
  • verb
  • To submit a report or bill to the government
  • To write in a newspaper or speak on a news program
  • To state something officially
  • To officially present yourself to an authority
  • To describe something by telling it to others

range

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US / reɪndʒ /

UK / rendʒ /

A2
  • noun
  • Cooking stove with multiple burners
  • Given distance from a point; how far plane can fly
  • Large grassy area where cattle wander and feed
  • Group or chain of mountains
  • Set of things with something in common
  • Limits within which something extends or varies
  • A set of products, e.g. so that people can choose
  • verb
  • To cover an area from one point to another
  • To extend to or vary within given limits
  • To put things in a row or in line
  • To wander or explore

exact

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US / ɪɡ'zækt /

UK / ɪɡˈzækt /

A2
  • adjecitve
  • Completely correct; accurate; specific
  • verb
  • To get something, sometimes using force

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

lower

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US / 'ləʊə(r) /

UK / ˈlaʊɚ, laʊr /

A2
  • adjecitve
  • In a position more near the bottom
  • verb
  • To move something downward to the ground

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

set

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US / set /

UK / sɛt /

A1
  • adjecitve
  • Prepared for something; ready
  • noun
  • Complete group of something
  • Place where a television show or movie is filmed
  • Group of games in a tennis match
  • Device that receives radio or television signals
  • verb
  • To make a clock state or ring at a particular time
  • To decide upon or choose something
  • To make something ready for use (e.g. table)
  • To decide on a price for something
  • To become hard (of glue, concrete etc.)
  • To be located in a specific place or time
  • To put (e.g. a vase) down carefully in a place
  • To put someone in a certain condition or state
  • (Of the sun) to go lower than the horizon

yourself

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US / jɔ:ˈself /

UK / jʊrˈsɛlf, jɔr-, jor-, jə- /

A1
  • pronoun
  • Reflexive form of 'you', used for an emphasis

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

begin

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  • Introduction to Video Content
  • California condors, the largest birds in North America, are critically endangered with fewer than 30 individuals in the 1980s. Since 1988, a captive breeding program has increased their population to over 1000, although genetic diversity is limited. Scientists have been carefully selecting mates to create a diverse population. However, two female condors recently defied expectations by laying eggs that developed into offspring without any male involvement. This phenomenon, known as parthenogenesis, is the first of its kind observed in California condors. Parthenogenesis is a reproduction method where females produce embryos from unfertilized eggs. While some insects and invertebrates exclusively reproduce through parthenogenesis, others resort to this method only when males are unavailable for fertilization. Previously reported cases include snakes, lizards, and turkeys, but this is one of the most significant reports of parthenogenesis in a bird. The researchers were able to trace back the genetic history of the birds in the breeding program to understand this occurrence. Interestingly, the two female condors had previously laid eggs with males present, suggesting that the absence of a fertile mate was not the cause.
  • Subtitles section
  • [♪ INTRO] California condors are the  largest birds in North America, and they're also critically endangered.
  • At one point in the 1980s, there were fewer than 30 individual birds in the entire species.
  • Since 1988, a captive  breeding program has bolstered those numbers to over 1000.
  • That doesn't leave a lot of genetic diversity  to work with, so the scientists in charge of that program have been carefully  selecting mates to create the most diverse population they can.
  • But last week, we learned that a couple of female condors took matters into their own wings.
  • They laid eggs that developed into  offspring without any help from a male.
  • The details are in a new paper out  last week in the Journal of Heredity.
  • These researchers report the first two known cases of parthenogenesis in California condors.
  • Parthenogenesis is a form of reproduction  where the female produces eggs that develop into embryos without  ever being fertilized.
  • Some species of insects and  other invertebrates have evolved to only reproduce through parthenogenesis.
  • Some other species can reproduce in this fashion, but only do so when a male just  can't be found to fertilize the eggs.
  • This has been reported in  snakes, lizards, and turkeys.
  • Though this is probably one of the  most solid reports in a bird so far.
  • The genomes of the birds in the condor  breeding program are carefully monitored, so the researchers were able to work  backwards to figure out what happened.
  • And here's the weird thing: the two  condor females had been housed with males, and had laid eggs with them before. It  wasn't like a fertile mate wasn't available.
  • Which makes this the first time that  parthenogenesis has ever been reported in any bird species where we know for sure  the female had access to a mate.
  • This discovery could be big news  for the conservation of the species.
  • For one thing, if all you need is one one  female bird to found a breeding population, that could help their range expand faster.
  • That's because these offspring aren't  female like their parents, thanks to the way that sex chromosomes work in birds.
  • Females have one Z and one W  chromosome, while males have two Z's.
  • These parthenote chicks would have gotten  a Z from their female parent, which got duplicated at some point to make  them ZZ -- so they are male!
  • Which means that theoretically, you  now have males and females that can reproduce in the conventional way  from as few as one individual.
  • This could also be a way of getting fatal  gene mutations out of the gene pool.
  • The exact way this goes down is a bit  complicated, but basically, these chicks have two sets of chromosomes, but a lot of the  versions of genes, or alleles, on those two chromosomes end up being identical.
  • When the offspring get one allele from  each parent, there's a decent chance they will be different from each other.
  • If one of those alleles is harmful or even  fatal to the bird, they might get a healthy one from the other parent and be ok.
  • But because the genetic  diversity in condors is so low, that chance is lower than usual.
  • Either way, that harmful allele  is still lurking in their genome to potentially pass on.
  • Parthenotes, however, are extremely  likely to get a double whammy, getting both versions of a harmful  allele from their single parent.
  • This may very well kill the bird.
  • Which is bad for the bird, but  good for the population overall, because it can't pass those  harmful alleles on if it is dead!
  • Which makes parthenogenesis a potential  double-edged sword, and ultimately, we don't know yet whether it's helping or hurting.
  • In fact, neither chick survived  to have offspring of their own.
  • Even so, these parthenogenetic parents  raise questions about what other species could be reproducing through parthenogenesis, and what that capability might  mean for conservation efforts.
  • And California condors aren't  the only big, charismatic animals we're still learning more about.
  • New research published this  week in Nature suggests that whales are a lot hungrier than we knew.
  • Like three times hungrier.
  • An international team of researchers set  out to figure out just how much large baleen whales, like blue whales  and humpback whales, eat.
  • These whales take gulps of water and then  force it back out through tough bristles in their mouths, expelling  the water while filtering out tiny fish and krill for them to chow down on.
  • The researchers attached GPS devices to  the whales to monitor their movements and figure out when they were eating.
  • They also photographed the  whales with drones to measure how big they were, and by  extension, how much they could eat.
  • In places where they observed whales eating, they would measure the population  of prey species like krill.
  • And with that information,  the researchers were able to estimate how much the whales eat.
  • And it turns out that whales eat a lot.
  • An eastern North Pacific blue whale can  consume 16 metric tons of krill per day.
  • Previously, scientists thought that  all of the whales in the region of the Pacific Ocean from Canada to Mexico eat about two million metric tons per year combined.
  • This finding suggests that they actually  eat more than six million tons of food.
  • And while that's impressive, understanding  how much whales eat is really important for understanding ocean ecosystems.
  • Because eating more food means pooping more poop.
  • And whale feces contains a ton of iron, which  is a critical nutrient for phytoplankton.
  • And conveniently, krill feed on phytoplankton.
  • So the whales eat the krill and then poop  out iron near the water's surface, which helps phytoplankton grow, which krill  colonies eat, and then the cycle begins again.
  • Which also explains why, when whale  populations diminished due to commercial whaling, krill populations  actually shrank with them.
  • Even though fewer whales were eating them.
  • Since phytoplankton also consume  carbon dioxide through photosynthesis, restoring whale populations  could actually increase the amount of CO2 that gets  pulled out of the atmosphere.
  • In fact, the researchers think that when  whale populations were at their peak, they probably did as much for atmospheric  carbon removal as forests.
  • So it turns out that baleen whales  don't just have massive appetites.
  • They, and their poop, are massively  important to the global carbon cycle.
  • Thanks for watching this episode of  SciShow, and a huge thanks to this month's President of Science, Matthew Brant!
  • Your support means a lot to us, and we  really couldn't do it without your help.
  • If you'd like a shot at becoming the  President of all science yourself, you can get started at patreon.com/scishow.
  • [♪ OUTRO]