Explain what the greenhouse effect is and why it is important for Earth.
Short wavelength radiation from the sun reflects off the earth in long wavelength radiation. The gases in the atmosphere absorb the radiation and heat up. It helps keep our planet warm enough to live.
1 of 7
List the 3 main greenhouse gases
Carbon dioxide,
Water vapour and
Methane
2 of 7
Describe how human activities are changing the levels of 2 greenhouse gases
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