a body of rock or sediment that holds groundwater
aquifer
the whole mass of air surrounding the earth
atmosphere
able to decay naturally and in a way that is not harmful
biodegradable
all the different kinds of life you'll find in one area
biodiversity
the gas formed when carbon is burned, or when people or animals breathe out.
carbon dioxide
the poisonous gas formed by the burning of carbon
carbon monoxide
a substance capable of causing cancer in living tissue.
carcinogen
the long-term pattern of weather in a particular area.
climate
a black rock that we can burn to produce heat and energy
coal
decayed organic material used as a fertilizer for growing plants
compost
make vegetable matter or manure into compost. (verb)
compost
the act of conserving and protecting the environment
conservation
a person who campaigns to protect the environment
conservationist
a product that can harm the environment
contaminant
the process of making something dirty or poisonous,
contamination
to cut down many trees in an area
deforestation
