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the increase in the earth’s temperature because of certain gases in the atmosphere.
GLOBAL WARMING
a situation in which different things are equal
balance
gases or other substances that are sent into the atmosphere
emissions
a black rock that is found under the ground and is burnt to produce heat
coal
a substance that was formed millions of years ago from dead animals or plants.
fossil fuel
to let a substance flow out
release
that can be replaced naturally without being used up
renewable
materials that are not needed and are thrown away
waste
the cutting down of trees in a large area, or the destruction of forests by people
deforestation
a substance that pollutes
pollutant
