Subtitles section
Repeat sentence
Subtitles mode
Full screen
Previous
Next
x 1.0
Playback speed
More

Scientists are obsessed with this lake - Nicola Storelli and Daniele Zanzi

Video vocabulary

eat

Copy vocabulary

US / i:t /

UK / it /

A1
  • verb
  • To put food in your mouth

divide

Copy vocabulary

US / dɪ'vaɪd /

UK / dɪˈvaɪd /

A2
  • verb
  • To split numbers by another number, e.g. 6 / 2 = 3
  • To separate something into equal pieces

global

Copy vocabulary

US / ˈgləʊbl /

UK / ˈgloʊbl /

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

million

Copy vocabulary

US / ˈmɪljən /

UK / ˈmɪljən /

A1
  • number
  • 1,000,000

safe

Copy vocabulary

US / seɪf /

UK / sef /

A2
  • noun
  • Metal box with a lock to keep valuable things in
  • adjecitve
  • Highly likely
  • Being out of danger

toxic

Copy vocabulary

US / ˈtɒksɪk /

UK / ˈtɑksɪk /

B2
  • adjecitve
  • Poisonous; harmful
  • (Of relationships) harmful; causing conflict

while

Copy vocabulary

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

clue

Copy vocabulary

US / klu: /

UK / klu /

B1
  • noun
  • Information that helps explain something; hint

reason

Copy vocabulary

US / 'ri:zn /

UK / ˈrizən /

A1
  • noun
  • Ability to think about facts and form a judgment
  • Explanation for why something occurred or was done
  • verb
  • To think and make conclusions in a logical manner

actually

Copy vocabulary

US / ˈæktʃuəli /

UK / ˈæktʃuəli /

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

ideal

Copy vocabulary

US / aɪˈdi:əl /

UK / aɪˈdiəl, aɪˈdil /

A2
  • adjecitve
  • Exactly right; could not be better
  • Which is thought of as being perfect

bacterium

Copy vocabulary

US / bæk'tɪərɪəm /

UK / bækˈtɪriəm /

B2
  • noun
  • The very small creatures that can cause disease

age

Copy vocabulary

US / eɪdʒ /

UK / edʒ /

A1
  • verb
  • To keep food, wine for a long time to improve it
  • To get older
  • noun
  • Period of time in history
  • Number of years a person or thing has lived

burp

Copy vocabulary

US / bɜ:p /

UK / bɜ:rp /

C1
  • verb
  • To expel gas from the stomach noisily

compose

Copy vocabulary

US / kəmˈpəʊz /

UK / kəmˈpoʊz /

B1
  • verb
  • To calm yourself after being angry or upset
  • To write an essay, article, poem, music etc.
  • To form something from a series of parts
  • To come together to form or make e.g. music
  • To structure a picture or image to make an effect

anaerobic

Copy vocabulary

US / ˌæneəˈrəʊbɪk /

UK / ænˌeəˈrobɪk /

C1
  • adjecitve
  • Living without oxygen from the air

day

Copy vocabulary

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

valley

Copy vocabulary

US / 'vælɪ /

UK / ˈvæli /

A2
  • noun
  • Area between mountains with river running through

here

Copy vocabulary

US / hɪə(r) /

UK / hɪr /

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

new

Copy vocabulary

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

swim

Copy vocabulary

US / swɪm /

UK / swɪm /

A1
  • noun
  • Act of swimming in a pool or ocean
  • verb
  • To move through water by moving parts of the body

flow

Copy vocabulary

US / fləʊ /

UK / flo /

A2
  • noun
  • Amount of something that moves through an area
  • verb
  • To move steadily and easily in a certain direction

population

Copy vocabulary

US / ˌpɒpjuˈleɪʃn /

UK / ˌpɑpjəˈleʃən /

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

fresh

Copy vocabulary

US / freʃ /

UK / frɛʃ /

A1
  • adjecitve
  • Clean; not used or dirty
  • Remaining clear, as in a person's memory
  • Newly made or gathered
  • (Water) not salty, usually from a lake or a river

many

Copy vocabulary

US / 'menɪ /

UK / ˈmɛni /

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

thousand

Copy vocabulary

US / ˈθaʊznd /

UK / ˈθaʊzənd /

A1
  • number
  • Number 1,000

will

Copy vocabulary

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

bottom

Copy vocabulary

US / 'bɒtəm /

UK / ˈbɑtəm /

A2
  • adjecitve
  • Concerning the part under something, e.g. a vase
  • noun
  • The part of your body you sit on
  • Lowest position, often in a company or contest
  • Lowest part of something; part on which it rests
  • Lowest level, part or point of an object
  • The part under something, e.g. a vase
  • verb
  • To hit the lowest part of something

example

Copy vocabulary

US / ɪgˈzɑ:mpl /

UK / ɪɡˈzæmpəl /

A1
  • noun
  • Thing, person which represents a category

emerge

Copy vocabulary

US / ɪ'mɜ:dʒ /

UK / ɪˈmɚdʒ /

A2
  • verb
  • To rise or appear out of some background

each

Copy vocabulary

US / i:tʃ /

UK / itʃ /

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

typical

Copy vocabulary

US / ˈtɪpɪkl /

UK / ˈtɪpɪkəl /

A2
  • adjecitve
  • Normal; usual; expected

bacteria

Copy vocabulary

US / bæk'tɪərɪə /

UK / bækˈtɪriə /

B2
  • noun
  • The very small creatures that can cause disease

directly

Copy vocabulary

US / dəˈrektli /

UK / dɪˈrɛktli, daɪ- /

A2
  • adverb
  • In a frank and honest way
  • Right away; immediately

get

Copy vocabulary

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

Copy vocabulary

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

pool

Copy vocabulary

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.)

roughly

Copy vocabulary

US / ˈrʌfli /

UK / ˈrʌflɪ /

B1
  • adverb
  • Approximately; (of numbers) about; around
  • In a manner that is violent or not careful
  • In an inexact, imprecise or violent way
  • In a basic, simple manner

case

Copy vocabulary

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

depth

Copy vocabulary

US / depθ /

UK / dɛpθ /

A2
  • noun
  • Distance below a surface

diffuse

Copy vocabulary

US / dɪ'fju:z /

UK / dɪˈfjuz /

B2
  • verb
  • To cause something to spread through a large area

enough

Copy vocabulary

US / ɪˈnʌf /

UK / ɪˈnʌf /

A1
  • adjecitve
  • Sufficient to answer the need
  • adverb
  • To a satisfactory degree
  • pronoun
  • Equal to what is needed; as much as required
  • Adequate number or amount

great

Copy vocabulary

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

mean

Copy vocabulary

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

oxygen

Copy vocabulary

US / 'ɒksɪdʒən /

UK / ˈɑksɪdʒən /

B1
  • noun
  • A gas in the air that we need to breathe

mix

Copy vocabulary

US / mɪks /

UK / mɪks /

A2
  • noun
  • A combination of more than two things
  • verb
  • To combine two or more things to make one
  • To meet and get along with others, e.g. at a party

anoxic

Copy vocabulary

US / æˈnɒksɪk /

UK / ænˈɑːksɪk /

C2
  • adjecitve
  • Concerning a lack of oxygen in tissues or organs

eventually

Copy vocabulary

US / ɪˈventʃuəli /

UK / ɪˈvɛntʃuəli /

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

fly

Copy vocabulary

US / flaɪ /

UK / flai /

A1
  • noun
  • Common flying insect, sometimes blue in color
  • Opening with fold of cloth hiding zipper on pants
  • verb
  • To move in the wind, e.g. a flag
  • To move at a high speed
  • To travel in a plane, helicopter, balloon etc.
  • To pilot people or items by plane
  • To travel through the air using wings

like

Copy vocabulary

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

second

Copy vocabulary

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

that

Copy vocabulary

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

Copy vocabulary

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

vein

Copy vocabulary

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

beneath

Copy vocabulary

US / bɪ'ni:θ /

UK / bɪˈniθ /

A2
  • preposition
  • Not worthy of you; not good enough for you
  • Under; In or to a lower position; below

cause

Copy vocabulary

US / kɔ:z /

UK / kɔz /

A2
  • noun
  • Belief, goal or organization that people support
  • Reason for
  • verb
  • To make something happen; create effect or result

devoid

Copy vocabulary

US / dɪˈvɔɪd /

UK / dɪˈvɔɪd /

A1
  • adjective
  • Entirely lacking or free from.

place

Copy vocabulary

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

mainly

Copy vocabulary

US / ˈmeɪnli /

UK / ˈmenli /

A2
  • adverb
  • Mostly; usually; being the largest part

access

Copy vocabulary

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

down

Copy vocabulary

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

force

Copy vocabulary

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

include

Copy vocabulary

US / ɪnˈklu:d /

UK / ɪnˈklud /

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

slowly

Copy vocabulary

US / ˈsləʊli /

UK / ˈsloʊli /

A1
  • adverb
  • In an unhurried or not speedy manner

sink

Copy vocabulary

US / sɪŋk /

UK / sɪŋk /

A2
  • noun
  • Large bowl in a kitchen or washroom for washing
  • verb
  • To push something down into the ground
  • To dig (a well)
  • To move down toward a lower point
  • To decrease in value or amount

touch

Copy vocabulary

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.

specie

Copy vocabulary

US / 'spi:ʃi: /

UK / 'spi:ʃɪ /

B1
  • noun
  • Singular of species

ability

Copy vocabulary

US / ə'bɪlətɪ /

UK / əˈbɪlɪti /

A2
  • noun
  • The power, resources or skill to do something

but

Copy vocabulary

US / bət /

UK / bʌt,bət /

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

life

Copy vocabulary

US / laɪf /

UK / laɪf /

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

single

Copy vocabulary

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

river

Copy vocabulary

US / ˈrɪvə(r) /

UK / ˈrɪvɚ /

A1
  • noun
  • Flowing water that runs from mountains to the sea

sulfate

Copy vocabulary

US / ˈsʌlˌfeɪt /

UK / ˈsʌlˌfet /

A1
  • other
  • A salt or ester of sulphuric acid
  • Convert into a sulfate

support

Copy vocabulary

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

mysterious

Copy vocabulary

US / mɪˈstɪəriəs /

UK / mɪˈstɪriəs /

A2
  • adjecitve
  • Unusual; hard to understand or work out

saturate

Copy vocabulary

US / ˈsætʃəreɪt /

UK / ˈsætʃəˌret /

B2
  • other
  • To cause something to become very wet
  • verb
  • To cause a liquid to not be able to absorb more
  • To try to fill up e.g. a market
  • To cause something to become very wet

pick

Copy vocabulary

US / pɪk /

UK / pɪk /

A1
  • noun
  • Sharp tool used for breaking the ground
  • Item selected from a group of choices
  • verb
  • To take fruit or vegetables from a plant or tree
  • To decide on a thing from various choices; select
  • To remove (flower, etc.) with your fingers

study

Copy vocabulary

US / 'stʌdɪ /

UK / ˈstʌdi /

A1
  • noun
  • Room that a person studies or reads in
  • Piece of research
  • Topic or subject you research or learn about
  • verb
  • To focus on learning something usually at school

would

Copy vocabulary

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

fisherman

Copy vocabulary

US / ˈfiʃəˌmən /

UK / ˈfɪʃəmən /

B2
  • noun
  • Man whose job is catching fish

insight

Copy vocabulary

US / 'ɪnsaɪt /

UK / ˈɪnˌsaɪt /

B1
  • noun
  • Power to understand people and things very well
  • Very good understanding of something

food

Copy vocabulary

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

not

Copy vocabulary

US / nɒt /

UK / nɑt /

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

powerful

Copy vocabulary

US / ˈpauəful /

UK / ˈpaʊəfəl /

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

relationship

Copy vocabulary

US / rɪˈleɪʃnʃɪp /

UK / rɪˈleʃənˌʃɪp /

A2
  • noun
  • Connection between two or more people or things
  • Way people interact or live with each other
  • Romantic or loving friendship between two people

sulfur

Copy vocabulary

US / 'sʌlfə /

UK / ˈsʌlfɚ /

C2
  • noun
  • Smelly yellow chemical often found near volcanoes

can

Copy vocabulary

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

drastically

Copy vocabulary

US / 'drɑ:stɪklɪ /

UK / ˈdræstɪkl:ɪ /

B2
  • adverb
  • In a sudden, extreme or severe manner

nearly

Copy vocabulary

US / ˈniəli /

UK / ˈnɪrli /

A1
  • adverb
  • Not completely; almost

photosynthesize

Copy vocabulary

US / ˌfəʊtəʊˈsɪnθəsaɪz /

UK / ˌfoʊtoʊˈsɪnθəsaɪz /

A1
  • verb
  • (Plants) to use the sun to make their food

towards

Copy vocabulary

US / tə'wɔ:dz /

UK / 'təuədz, twɔ:dz /

A1
  • preposition
  • In the direction of someone or something

granitic

Copy vocabulary

US / ɡræ'nɪtɪk /

UK / ɡræ'nɪtɪk /

A1
  • other
  • Hard as granite

microorganism

Copy vocabulary

US / ˌmaɪkrəʊ'ɔ:gənɪzəm /

UK / ˌmaɪkroˈɔrɡəˌnɪzəm /

C2
  • noun
  • Extremely small living thing that cannot be seen

thin

Copy vocabulary

US / θɪn /

UK / θɪn /

A1
  • adjecitve
  • Flowing with ease; with a high percentage of water
  • (Of air) having little oxygen
  • Being or growing far apart in small amounts
  • Not thick; not wide in size
  • Having little flesh or fat on the body
  • Being weak or useless
  • verb
  • To make flow more easily by adding water or liquid

yet

Copy vocabulary

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

video

Copy vocabulary

US / 'vɪdɪəʊ /

UK / ˈvɪdiˌo /

A2
  • adjecitve
  • Of a moving film, with sound
  • noun
  • Recording capturing action with sound
  • verb
  • To make a moving film of, with sound

completely

Copy vocabulary

US / kəmˈpli:tli /

UK / kəmˈpliːtli /

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

spring

Copy vocabulary

US / sprɪŋ /

UK / sprɪŋ /

A1
  • noun
  • Coil of metal that lessens impact, e.g. on cars
  • Sudden jump from one place to another
  • The time when plants start growing after winter
  • Place where water flows from beneath the ground
  • verb
  • To lessen the impact of something under pressure
  • To jump into the air

two

Copy vocabulary

US / tu: /

UK / tu /

A1
  • number
  • 2

ten

Copy vocabulary

US / ten /

UK / tɛn /

A1
  • number
  • 10

any

Copy vocabulary

US / 'enɪ /

UK / ˈɛni /

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

dive

Copy vocabulary

US / daɪv /

UK / daɪv /

B1
  • noun
  • Restaurant, bar or club with a bad reputation
  • Rapid fall through air
  • A jump into water head-first from a high place
  • Rapid fall in the value or price of something
  • verb
  • To swim deep under water with an air supply
  • To rapid fall through air
  • To jump into water head-first
  • (Of prices) to rapidly fall

composition

Copy vocabulary

US / ˌkɒmpəˈzɪʃn /

UK / ˌkɑ:mpəˈzɪʃn /

A2
  • noun
  • Piece of writing, music etc.
  • A piece of music
  • Structure of a picture or image to make an effect

layer

Copy vocabulary

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

Copy vocabulary

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

waterway

Copy vocabulary

US / ˈwɔ:təweɪ /

UK / ˈwɔ:tərweɪ /

A1
  • noun
  • Navigable body of water

beyond

Copy vocabulary

US / bɪ'jɒnd /

UK / biˈɑnd, bɪˈjɑnd /

A2
  • adverb
  • On or to the farther side
  • In addition to
  • preposition
  • Later in time than
  • Out of the limits of

finally

Copy vocabulary

US / ˈfaɪnəli /

UK / ˈfaɪnəli /

A1
  • adverb
  • used especially at the beginning of a sentence to introduce the last point or idea
  • After a long time or some difficulty

legend

Copy vocabulary

US / 'ledʒənd /

UK / ˈlɛdʒənd /

B1
  • noun
  • List of explanations of symbols on map, etc.
  • Person famous for doing something very well
  • Old story generally believed, although not proven

name

Copy vocabulary

US / neɪm /

UK / nem /

A1
  • noun
  • What something or someone is called
  • verb
  • To state what someone is called, e.g. John

from

Copy vocabulary

US / frəm /

UK / frʌm, frɑm,frəm /

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

fish

Copy vocabulary

US / fɪʃ /

UK / fɪʃ /

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

form

Copy vocabulary

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

out

Copy vocabulary

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

over

Copy vocabulary

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

and

Copy vocabulary

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

back

Copy vocabulary

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

early

Copy vocabulary

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

large

Copy vocabulary

US / lɑ:dʒ /

UK / lɑ:rdʒ /

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

most

Copy vocabulary

US / məʊst /

UK / most /

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

mostly

Copy vocabulary

US / ˈməʊstli /

UK / ˈmoʊstli /

A2
  • adverb
  • In large part; mainly or chiefly

stack

Copy vocabulary

US / stæk /

UK / stæk /

B1
  • noun
  • A large number or amount of something
  • Large tube through which smoke exits a building
  • verb
  • To arrange cards in a certain order, to cheat
  • To put one thing on top of another, e.g. boxes

throughout

Copy vocabulary

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

await

Copy vocabulary

US / əˈweɪt /

UK / əˈwet /

B1
  • verb
  • To keep ready for future needs
  • To be ready to happen, or about to happen

call

Copy vocabulary

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

cross

Copy vocabulary

US / krɒs /

UK / krɔs, krɑs /

A2
  • adjecitve
  • Angry and upset
  • From one side of something to the other
  • noun
  • (Of animals) mixture of breeds in one animal
  • Person's name
  • verb
  • To put one thing over another e.g. arms
  • To breed one type of animal or plant with another
  • To not to agree with someone; oppose
  • To go from one side of something to the other
  • To meet at one point

hide

Copy vocabulary

US / haɪd /

UK / haɪd /

A1
  • noun
  • The skin of an animal used for making leather
  • verb
  • To go to, or put a thing where it can't be found

swiss

Copy vocabulary

US / swɪs /

UK / swɪs /

A1
  • noun
  • Person from Switzerland
  • other
  • People or things from Switzerland

where

Copy vocabulary

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

dependent

Copy vocabulary

US / dɪˈpendənt /

UK / dɪˈpɛndənt /

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

those

Copy vocabulary

US / ðəʊz /

UK / ðoz /

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

boon

Copy vocabulary

US / bu:n /

UK / bun /

C1
  • noun
  • Something very helpful which makes life easier

begin

Copy vocabulary

US / bɪ'ɡɪn /

UK / ˈbeɡɪn /

A1
  • verb
  • To do the first part of an action; to start

rich

Copy vocabulary

US / rɪtʃ /

UK / rɪtʃ /

A1
  • adjecitve
  • Having a lot of money or valuable possessions
  • Containing a lot of exciting events or experiences and therefore very interesting
  • (of a color, sound, smell, etc.) Pleasantly deep or strong
  • If food is rich, it contains a large amount of oil, butter, eggs, or cream.

subject

Copy vocabulary

US / 'sʌbdʒɪkt /

UK / ˈsʌbdʒekt /

A1
  • noun
  • Citizen of an area or country
  • The person or thing that does the action of a verb
  • People who take part in experiments or tests
  • An area of study at school, e.g. math, history
  • What a book, article etc. is about; theme
  • verb
  • To cause to suffer or experience something

such

Copy vocabulary

US / sʌtʃ /

UK / sʌtʃ /

A1
  • determiner
  • Being similar to
  • (Thing) as previously stated or referred to
  • adverb
  • (Used to emphasize the quality of an adjective)

water

Copy vocabulary

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

never

Copy vocabulary

US / 'nevə(r) /

UK / ˈnɛvɚ /

A1
  • adverb
  • Not ever; not at any time

suffocate

Copy vocabulary

US / ˈsʌfəkeɪt /

UK / ˈsʌfəˌket /

C1
  • verb
  • To (cause to) die from lack of air to breathe
  • To stop a thing developing, e.g. by too many rules

for

Copy vocabulary

US / fə(r) /

UK / fɔr,fə /

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

border

Copy vocabulary

US / 'bɔ:də(r) /

UK / ˈbɔrdɚ /

A2
  • noun
  • Outer part or edge of something
  • Line separating one country, state from another
  • verb
  • To be right next to another country or state
  • To form the edge of something
  • To form the edge of (road, etc.)

evolve

Copy vocabulary

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

earth

Copy vocabulary

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

fact

Copy vocabulary

US / fækt /

UK / fækt /

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

inch

Copy vocabulary

US / ɪntʃ /

UK / ɪntʃ /

A1
  • noun
  • 1/12th of a foot (2.54 centimeters)
  • Very small distance
  • verb
  • To move or cause to move a small bit at a time

ocean

Copy vocabulary

US / 'əʊʃn /

UK / ˈoʃən /

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

standard

Copy vocabulary

US / 'stændəd /

UK / ˈstændəd /

A2
  • adjecitve
  • Being the accepted normal level of quality
  • (Of a language) being the most accepted in a place
  • noun
  • Official unit of measuring something
  • Principle of behaving in a moral way

die

Copy vocabulary

US / daɪ /

UK / daɪ /

A1
  • noun
  • Cube with dots numbering 1-6 on it used in games
  • verb
  • To cease to function or work
  • (Of a thing) to stop being used or done
  • (Of a person) to stop living

since

Copy vocabulary

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

unique

Copy vocabulary

US / jʊ'ni:k /

UK / juˈnik /

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

well

Copy vocabulary

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

averse

Copy vocabulary

US / əˈvɜ:s /

UK / əˈvɜ:rs /

B2
  • adjecitve
  • Averse to feeling strong dislike for

catastrophe

Copy vocabulary

US / kə'tæstrəfɪ /

UK / kəˈtæstrəfi /

B2
  • noun
  • Very bad disaster causing much suffering, etc.

just

Copy vocabulary

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)

cascade

Copy vocabulary

US / kæˈskeɪd /

UK / kæˈsked /

B1
  • noun
  • Body of water falling from something tall
  • verb
  • To fall, flow, or hang down in a large amount

poisonous

Copy vocabulary

US / ˈpɔɪzənəs /

UK / ˈpɔɪzənəs /

A2
  • adjecitve
  • Harmful; unfriendly; unpleasant
  • Causing sickness or death when eaten or drunk

below

Copy vocabulary

US / bɪ'ləʊ /

UK / bɪˈlo /

A1
  • preposition
  • In a lower position, place, or level

body

Copy vocabulary

US / ˈbɒd.i /

UK / ˈbɑdi /

A1
  • noun
  • An object distinct from other objects
  • A group of people involved in an activity together
  • Main part of something
  • A person's physical self

path

Copy vocabulary

US / pɑ:θ /

UK / pæθ, pɑθ /

A2
  • noun
  • Method of living leading to a particular result
  • Track made with stones, by walking over the ground

porous

Copy vocabulary

US / ˈpɔ:rəs /

UK / ˈpɔrəs, ˈpor- /

C1
  • adjecitve
  • With many tiny holes so liquid, etc. passes through
  • (Of borders) easy for people to pass through

make

Copy vocabulary

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

phenomenon

Copy vocabulary

US / fə'nɒmɪnən /

UK / fɪˈnɑməˌnɑn, -nən /

B1
  • noun
  • Unusual event, fact that can be studied
  • Interesting or unusual person, group
  • something that exists and can be seen, felt, tasted, etc., especially something unusual or interesti

bounty

Copy vocabulary

US / 'baʊntɪ /

UK / ˈbaʊnti /

B2
  • noun
  • Supply of something good in plentiful amounts

emit

Copy vocabulary

US / ɪ'mɪt /

UK / ɪˈmɪt /

B1
  • verb
  • To release or send out (a gas, etc.)

lethal

Copy vocabulary

US / 'li:θl /

UK / ˈliθəl /

B2
  • adjecitve
  • Causing or able to cause death

might

Copy vocabulary

US / maɪt /

UK / maɪt /

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

researcher

Copy vocabulary

US / rɪ'sɜ:tʃə(r) /

UK / rɪˈsətʃɚ /

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

the

Copy vocabulary

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

ecosystem

Copy vocabulary

US / ˈi:kəʊsɪstəm /

UK / ˈɛkoˌsɪstəm, ˈiko- /

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

surface

Copy vocabulary

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

Copy vocabulary

US / θri: /

UK / θri /

A1
  • number
  • Number 3

alp

Copy vocabulary

US / ælp /

UK / ælp /

A1
  • other
  • Any high mountain

follow

Copy vocabulary

US / ˈfɔləu /

UK / ˈfɑlo /

A1
  • verb
  • To come after someone; be guided by someone
  • To support someone, e.g. singer or comedian
  • To be the logical result of something
  • To happen after something else happens
  • To believe a set of values or a moral teacher
  • To understand something happening or being said

kind

Copy vocabulary

US / kaɪnd /

UK / kaɪnd /

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

live

Copy vocabulary

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

Copy vocabulary

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)

year

Copy vocabulary

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

you

Copy vocabulary

US / jʊ /

UK / ju /

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

free

Copy vocabulary

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

multicellular

Copy vocabulary

US / mʌltɪ'seljʊlə /

UK / ˌmʌltiˈsɛljəlɚ, -taɪ- /

C2
  • adjecitve
  • Consisting of many cells

plump

Copy vocabulary

US / plʌmp /

UK / plʌmp /

B2
  • adjecitve
  • Large and round; slightly fat, in a pleasant way

this

Copy vocabulary

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

deadly

Copy vocabulary

US / ˈdedli /

UK / ˈdɛdli /

A2
  • adjecitve
  • Causing or capable of causing death
  • Being very accurate

entire

Copy vocabulary

US / ɪn'taɪə(r) /

UK / ɛnˈtaɪr /

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

into

Copy vocabulary

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

lifeform

Copy vocabulary

US / wəʊd /

UK / woʊd /

A1

other

Copy vocabulary

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

one

Copy vocabulary

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

rock

Copy vocabulary

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

than

Copy vocabulary

US / ðən /

UK / ðən /

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

chemical

Copy vocabulary

US / ˈkemɪkl /

UK / ˈkɛmɪkəl /

A2
  • adjecitve
  • Made of various elements
  • noun
  • Basic substance produced by mixing elements

essential

Copy vocabulary

US / ɪ'senʃl /

UK / ɪˈsɛnʃəl /

A2
  • adjecitve
  • Extremely or most important and necessary

plant

Copy vocabulary

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

take

Copy vocabulary

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

zooplankton

Copy vocabulary

US / ˌzəʊə'plæŋktən /

UK / ˌzoʊr'plæŋktən /

A1
  • noun
  • Animal constituent of plankton; mainly small crustaceans and fish larvae

blanket

Copy vocabulary

US / 'blæŋkɪt /

UK / ˈblæŋkɪt /

A2
  • noun
  • Piece of cloth you covers yourself with in bed
  • verb
  • To cover something completely so it cannot be seen

dolomite

Copy vocabulary

US / ˈdɒləmaɪt /

UK / ˈdoʊləˌmaɪt /

C2
  • noun
  • Kind of sedimentary rock resembling marble

all

Copy vocabulary

US / ɔ:l /

UK / ɔl /

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

its

Copy vocabulary

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

Copy vocabulary

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

strange

Copy vocabulary

US / streɪndʒ /

UK / strendʒ /

A1
  • adjecitve
  • Unusual or odd; surprising because unexpected

top

Copy vocabulary

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

ecology

Copy vocabulary

US / ɪ'kɒlədʒɪ /

UK / ɪˈkɑlədʒi /

B1
  • noun
  • Study of plants, animals and their environments

otherworldly

Copy vocabulary

US / 'ʌðə'wɜ:ldlɪ /

UK / ˌʌðɚˈwə:ldli /

C2
  • adjecitve
  • Not belonging to this world; alien; weird

pre

Copy vocabulary

US / ˈpriː /

UK / ˈpriː /

B2
  • prefix
  • A prefix meaning 'before'
  • In preparation or in advance

between

Copy vocabulary

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

billion

Copy vocabulary

US / ˈbɪljən /

UK / ˈbɪljən /

A2
  • noun
  • Number 1,000,000,000

gradually

Copy vocabulary

US / ˈgrædʒuəli /

UK / ˈɡrædʒʊəlɪ /

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

mountain

Copy vocabulary

US / 'maʊntən /

UK / ˈmaʊntən /

A1
  • noun
  • Very high piece of land, higher than a hill

neither

Copy vocabulary

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

they

Copy vocabulary

US / ðeɪ /

UK / ðe /

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

thirteen

Copy vocabulary

US / ˌθɜ:'ti:n /

UK / θə:ˈtin /

A1
  • number
  • 13

ago

Copy vocabulary

US / əˈgəʊ /

UK / əˈgoʊ /

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

lake

Copy vocabulary

US / leɪk /

UK / lek /

A2
  • noun
  • Large area of water surrounded by land

move

Copy vocabulary

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

their

Copy vocabulary

US / ðɛː /

UK / ðer /

A1
  • determiner
  • Belonging to them

way

Copy vocabulary

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

heavy

Copy vocabulary

US / 'hevɪ /

UK / ˈhɛvi /

A1
  • adjecitve
  • Greater in amount, degree, or severity than usual
  • Involving serious or strong emotions
  • Having a lot of weight

old

Copy vocabulary

US / əʊld /

UK / old /

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

both

Copy vocabulary

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

Copy vocabulary

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

isolate

Copy vocabulary

US / ˈaɪsəleɪt /

UK / ˈaɪsəˌlet /

B1
  • verb
  • To identify, consider, or deal with separately
  • To keep in a place or situation apart from others
  • To separate something from another substance

dense

Copy vocabulary

US / dens /

UK / dɛns /

B1
  • adjecitve
  • Very thick and difficult to see, get through
  • Hard to understand
  • Uncomprehending; foolish; inconsiderate

microenvironment

Copy vocabulary

US / 'maɪkrəʊɪn'vaɪərənmənt /

UK / 'maɪkroʊɪn'vaɪrənmənt /

A1
  • noun

possible

Copy vocabulary

US / ˈpɒsəbl /

UK / ˈpɑsəbəl /

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

exist

Copy vocabulary

US / ɪɡ'zɪst /

UK / ɪɡˈzɪst /

A1
  • verb
  • To be present, alive or real

explore

Copy vocabulary

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

ice

Copy vocabulary

US / aɪs /

UK / aɪs /

A1
  • noun
  • Frozen gas or liquid, esp. water
  • Sweet food made of frozen cream, or juices
  • verb
  • To make something cold by putting on frozen water
  • To spread a sweet and creamy substance on a cake

upper

Copy vocabulary

US / ˈʌpə(r) /

UK / ˈʌpɚ /

B1
  • adjecitve
  • Located above others of the same kind
  • Being the northern part of a region
  • Being closer to the source of a river
  • noun
  • Drug that improves mood or increases energy
  • Something happy or encouraging
  • Top part of a shoe, other than the flat bottom

feed

Copy vocabulary

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

full

Copy vocabulary

US / fʊl /

UK / fʊl /

A1
  • adjecitve
  • Containing all the parts; complete
  • Containing or holding as much as possible
  • Having had enough food
  • adverb
  • In a direct manner; completely

increase

Copy vocabulary

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

rainwater

Copy vocabulary

US / ˈreɪnwɔ:tə(r) /

UK / ˈrenˌwɔtɚ, -ˌwɑtɚ /

C1
  • noun
  • Drops of fresh water that fall from clouds

sulfide

Copy vocabulary

US / 'sʌlfaɪd /

UK / ˈsʌlˌfaɪd /

A1
  • other
  • A compound of sulphur and some other element that is more electropositive

sun

Copy vocabulary

US / sʌn /

UK / sʌn /

A1
  • noun
  • Light and heat coming from a large star in the sky
  • Hot shining star the Earth moves around
  • verb
  • To lie in the sunshine and enjoy its warmth

meter

Copy vocabulary

US / ˈmi:tə(r) /

UK / ˈmitɚ /

A1
  • noun
  • Unit of length equal to 100 cm or about 39 inches
  • Device for measuring things e.g. gas
  • Device to put money into to rent a parking place
  • Rhythm of a poem
  • verb
  • To measure water, etc. when it has to be paid for

hundred

Copy vocabulary

US / 'hʌndrəd /

UK / ˈhʌndrɪd /

A1
  • number
  • 100

oxygenate

Copy vocabulary

US / ˈɒksɪdʒəneɪt /

UK / ˈɑːksɪdʒəneɪt /

C2
  • verb
  • To treat or combine with oxygen

model

Copy vocabulary

US / ˈmɒdl /

UK / ˈmɑ:dl /

A2
  • adjecitve
  • Being an excellent example of
  • noun
  • Person who wears fashion to show it to the public
  • A small scale copy of a full original
  • verb
  • To wear and display clothes at a fashion show
  • To make a small scale copy of a full original

world

Copy vocabulary

US / wɜ:ld /

UK / wɜrld /

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

scientist

Copy vocabulary

US / ˈsaɪəntɪst /

UK / ˈsaɪəntɪst /

A2
  • noun
  • Person who is trained in a science

sulphurous

Copy vocabulary

US / ˈsʌlfərəs /

UK / ˈsʌlfərəs /

C2
  • adjecitve
  • Concerning or containing sulfur

with

Copy vocabulary

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

before

Copy vocabulary

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

century

Copy vocabulary

US / 'sentʃərɪ /

UK / ˈsɛntʃəri /

A1
  • noun
  • Period of 100 years

have

Copy vocabulary

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

seep

Copy vocabulary

US / si:p /

UK / sip /

B2
  • verb
  • To flow slowly through small openings or pores

salt

Copy vocabulary

US / sɔ:lt /

UK / sɔlt /

A2
  • adjecitve
  • Being preserved or seasoned with salt
  • noun
  • Natural white crystal used to flavor food
  • verb
  • To add salt to food in order to improve its taste
  • To add salt to ice in order to melt it
  • To preserve food by adding salt

know

Copy vocabulary

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

low

Copy vocabulary

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

nor

Copy vocabulary

US / nɔ:(r) /

UK / nɔr /

A2
  • conjunction
  • Not this or that; also not

plentiful

Copy vocabulary

US / ˈplentɪfl /

UK / ˈplɛntɪfəl /

B1
  • adjecitve
  • Existing in large amounts or numbers

rely

Copy vocabulary

US / rɪ'laɪ /

UK / rɪˈlaɪ /

B2
  • verb
  • Depend on with full trust or confidence
  • Subtitles section
  • Roughly three billion years ago, a single celled photosynthetic bacterium began burping a new chemical that was poisonous to nearly every species on Earth.
  • Over the following hundreds of millions of years, more microorganisms began producing this toxic gas, first saturating Earth's oceans and eventually its atmosphere.
  • Up here, this chemical changed the composition of pre existing gases so drastically that it caused a global ice age.
  • And the name of this powerful, poisonous, world changing gas?
  • Oxygen.
  • In the millions of years since the Great Oxygen Catastrophe, most life, including all multicellular organisms, have evolved to rely on this gas.
  • However, there are some places where oxygen averse microorganisms, like those from Earth's earliest days, have re emerged.
  • Many of these places are in the ocean depths, beyond the reach of researchers.
  • But there are other bodies of water completely devoid of oxygen, yet close enough to the surface to explore.
  • And one such lake is hidden high in the Swiss Alps' Piura Valley.
  • Formed over ten thousand years ago, Lake Cadaño is one of roughly two hundred known meromictic lakes, meaning it's actually two distinct bodies of water stacked on top of each other.
  • The top layer functions like a standard body of fresh water.
  • It's safe for swimming, and known mostly for a plump and plentiful fish population that's been the subject of local fishing legends for centuries.
  • But just thirteen meters beneath that bounty is a dense, sulfurous, oxygen free pool lethal to any multicellular lifeforms, fish included.
  • In a typical lake, the entire body of water would gradually mix, diffusing oxygen from the surface throughout.
  • But these two layers never mix, as is the case with any meromictic lake.
  • And the reason for this divide in Cadaño is the water's unique chemical compositions.
  • Both layers are fed by rainwater flowing down the mountains.
  • However, this water can take two paths.
  • The first is to trickle down the granitic mountain directly into the top layer.
  • The second is to seep into the Peora Valley's vein of dolomite, a porous rock full of salts such as sulfate.
  • Rainwater that sinks into the dolomite will slowly inch towards the lake, all the while shedding its oxygen and picking up salts.
  • Finally, this heavier water will cascade from sublacustrine springs below the lake's surface, forming the dense, salt rich bottom layer.
  • This lower layer is anoxic, meaning oxygen free, and will suffocate any oxygen dependent life.
  • But it's ideal for the kind of anaerobic bacteria that died off in the Great Oxygen Catastrophe.
  • The flow from the sublacustrine springs creates microenvironments which feed large aggregates of microorganisms that emerge from the lakebed in strange and otherworldly shapes.
  • Various anaerobic microorganisms take in the water's sulfate and emit toxic sulfide.
  • And at the border of these layers, there's a thin blanket mainly composed of pink bodied Chromatium ocheni, a photosynthesizing bacterium that relies on this sulfur the way most plants rely on oxygen.
  • However, while neither water nor organisms move between the layers, these ecosystems aren't completely out of touch.
  • Chromatium ocheni live at the top of the bottom layer because they need to be as close to the sun as possible.
  • But while they never cross into the deadly oxygenated waters, they're close enough that organisms like zooplankton can dive down, eat them, and get back up.
  • In fact, this relationship forms the bottom of the upper layer's robust food chain, supporting the lake's legendary fish population.
  • This unique ecology is more than just a boon for Cadaño's fishermen.
  • Having access to an isolated anaerobic ecosystem allows scientists to model the world before the Great Oxygen Catastrophe.
  • For example, when chromatium oconi form their blanket, they increase the density of that thin layer of water.
  • As the water sinks, these microorganisms are forced to swim back up, creating a minute mixing of water called bioconvection.
  • This billions of years old phenomenon might be a clue to how early life evolved the ability to swim.
  • And it's just one of the many insights that await researchers studying Cadaño's mysterious depths.
  • Did you know that the largest river on Earth is actually in the sky?
  • Explore the essential waterways known as flying rivers with this video.
  • Or find out what makes the Great Lakes so, well, great, with this video.