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Which substance accounts for nearly 80 percent of Earth's atmosphere? A. oxygen B. nitrogen C. carbon dioxide D. argon
Nitrogen makes up about 80 percent of Earth's atmosphere.
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Asked 5/1/2015 11:18:41 AM
Updated 5/1/2015 11:45:39 AM
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Nitrogen makes up about 80 percent of Earth's atmosphere.
Added 5/1/2015 11:45:39 AM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [5/1/2015 2:15:23 PM]
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