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Climate: Carbon dioxide: Fossil fuels:
The average pattern of A gas released by the Carbon Coal, oil, and nat-
weather conditions Global warming: burning of coal, natural footprint: ural gas, which
over a long period of The increase in Earth’s gas, oil, and wood that The amount of come from the
time. Climate isn’t average temperature traps heat in the carbon dioxide one breakdown of
weather— weather over a long period of time atmosphere human releases into ancient plants
changes daily. the environment and animals over
in a year millions of years

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APRIL 2018 • NAT GEO KIDS 15