Word

meaning

smog

 fog mixed with smoke : a cloud of dirty air from cars, factories, etc., that is usually found in cities

pollution

the action or process of making land, water, air, etc., dirty and not safe or suitable to use

conserve

to keep (something) safe or from being damaged or destroyed

contamination

 to make (something) dangerous, dirty, or impure by adding something harmful or undesirable to it

recycle

to make something new from (something that has been used before)

habitat

the place or type of place where a plant or animal naturally or normally lives or grows

endangered

used to describe a type of animal or plant that has become very rare and that could die out completely

deforestation

 the act or result of cutting down or burning all the trees in an area