saraso3rbedragab saraso3rbedragab
  • 24-04-2017
  • Biology
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What percentage of nitrogen does our atmosphere contain?

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griebelbrendon griebelbrendon
  • 24-04-2017
Earth's atmosphere is 78% nitrogen 21% oxygen, 0.9% argon, and 0.03% carbon dioxide with very small percentages of other elements.
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