Exit Quiz
Question 1 of 6
1
of 6
What are greenhouse gases?
Select one answer
gases in Earth’s atmosphere that keep it warmer than it would be without them
gases in Earth’s atmosphere that keep it cooler than it would be without them
an insulating layer of gases near the top of the atmosphere
an insulating layer of gases close to Earth’s surface
Earth’s atmosphere is a mixture of gases, some of which are greenhouse gases.
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