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Before there was life on earth, which gas was absent from the ancient atmosphere? A. ammonia B.methane C .nitrogen D. Oxygen

Before there was life on earth, which gas was absent from the ancient atmosphere? A. ammonia B.methane C .nitrogen D. Oxygen
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1 vote
Before there was life on earth, which gas was absent from the ancient atmosphere?

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

asked
User Krunal Rajkotiya
by
7.7k points

1 Answer

1 vote
D oxygen there was no free oxygen on the earth
answered
User Gosua
by
8.0k points
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