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

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

a container for waste

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

to make a person or place clean and tidy

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

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

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

to harm or spoil something

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

waste material or things that are no longer wanted or needed

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