wider world 4 unit 2

to stop someone or something from being killed, injured, or destroyed

the grey, black, or white mixture of gas and very small pieces of carbon that is produced when something burns

a thick liquid that comes from petroleum, used as a fuel and for making parts of machines move easily

to get rid of something by treating it as garbage

the number of vehicles moving along roads, or the amount of aircraft, trains, or ships moving along a route

a liquid obtained from petroleum, used especially as a fuel for cars and other vehicles

to make an area or substance, usually air, water, or soil, dirty or harmful to people, animals, and plants, especially by adding harmful chemicals

to harm or spoil something

waste material or things that are no longer wanted or needed

a building or set of buildings where large amounts of goods are made using machines

small pieces of rubbish that have been left lying on the ground in public places

to make a person or place clean and tidy

a living thing that grows in earth or in water

a closed metal container, especially cylinder-shaped, in which some types of drink and food are sold

to keep someone or something safe from injury, damage, or loss

to use too much of something or use something badly when there is a limited amount of it

to sort and collect rubbish in order to treat it and produce useful materials that can be used again

the air, water, and land in or on which people, animals, and plants live

a container for waste

a type of animal or plant that might stop existing because there are only a few of that type alive