brenaroo14 brenaroo14
  • 25-09-2017
  • History
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Which gas was present in the atmospheres of both early and modern Earth? history
 

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mkcastro mkcastro
  • 25-09-2017
78%is nitrogen
21%is oxygen
and then theres 2 others which is argon 0.9% and CO2 0.037%
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