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Before there was any life on Earth, which gas was absent from the ancient atmosphere? A.nitrogen B.ammonia C.oxygen D.methane please answer lol
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Before there was any life on Earth, which gas was absent from the ancient atmosphere?

A.nitrogen
B.ammonia
C.oxygen
D.methane

please answer lol

User Tim Cadenbach
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1 Answer

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If I am right it should be D because pigs make methane
User Mark Lakewood
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