regretnothing regretnothing

25-07-2016
Biology

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Earth's atmosphere is composed of about 78 percent of what gas?

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alexandrabarro alexandrabarro

25-07-2016

78% of the atmosphere is composed of nitrogen

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ArGM2015 ArGM2015

25-07-2016

78% of nitrogen, 21% oxygen, and 1% of carbon dioxide and other gases.

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