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25 March, 23:52

Which combination of gases dominates Earth's atmosphere?

A>argon (78.50%), oxygen (20.90%)

B>nitrogen (78.10%), oxygen (20.90%)

C>carbon dioxide (78.15%), oxygen (20.90%)

D>methane (50.10%), oxygen (49.9%)

E>nitrogen (20.9%), oxygen (78.10%)

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Answers (2)
  1. 26 March, 00:03
    0
    Just doing this so I can get my 4 answers out the way to be able to message people
  2. 26 March, 02:47
    0
    The answer is B. Because the Earth’s atmosphere is mostly nitrogen and oxygen.
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