Excess
Ecosystem
Greenhouse gas
Fossil fuels
Carbon dioxide
Atmosphere
Climate change
Drought
a long-term change in the average weather patterns that have come to define Earth's local, regional and global climates.
a heavy colorless gas that is formed by burning fuels.
the layer of gas that surrounds the Earth,
made from decomposing plants and animals.
too much of something.
an area where certain plants and animals live and interact.
a gas that traps heat from the sun,
a long period of time without rain.