Vocabulary Unit 1

To search in a wide area for something, especially food.

A system in which animals or birds are kept inside in small spaces and made to grow or produce eggs very quickly.

(not) capable of continuing for a long time without harming the environment.

Factory where people work very hard in bad conditions and earn very little money.

Something such as your work that provides the money that you need to live.

A very large metal container used for waste.

to exchange goods/services for other goods/services instead of using money.

to use a supply of something such as time, energy, or fuel.

Relating to ecology or the environment.

A bad effect that something has, usually lasting for a long time.