Earth

78% of the earth's atmosphere is composed of which gas?

More Questions from Earth
Hot, hazy weather mixed with pollution leads to what?
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What type of glaciers fill up the gaps between mountains?
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To which island group do Kwajalein and Eniwetok belong?
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What kind of rain is bad for the environment?
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What word means a mild or moderate temperature?
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What plant's gel is often used in lotions and sunblocks?
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What is moving air called?
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What is the nickname of Katmai in Alaska?
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