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Oxygen accounts for about ____ of the air in the atmosphere. A: 82% B: 5% C: 66% D: 53% E: 21%
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Oxygen accounts for about ____ of the air in the atmosphere.

A: 82%

B: 5%

C: 66%

D: 53%

E: 21%

User Daviddeath
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1 Answer

3 votes


21\% \: is \: answer.

User Ckruse
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