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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

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
by
8.9k points

1 Answer

8 votes
If I am right it should be D because pigs make methane
User Mark Lakewood
by
9.2k points
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