Toxic gases expelled by cars
exhaust fumes
The rise in temperature caused by gases in the atmosphere.
global warming
Animals which are in danger of becoming extinct.
Endangered animals
Polluted water falling from the clouds.
Acid rain
Pollution of the atmosphere.
Air pollution
The natural world in which people, animals and plants live.
Environment
The power that comes from coal, electricity, gas, etc. that is used for producing heat.
Energy
Cutting down or burning trees over a large area.
Deforestation
to process used objects so that they can be used again
to recycle
it protects the earth from dangerous rays of the sun
ozone layer
to make air, rivers etc. dirty
to pollute
