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Before there was any life on earth, which gas was absent from the ancient atmosatmosphere? 1)oxygen 2)ammonia 3)nitrogen 4)methane
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Before there was any life on earth, which gas was absent from the ancient atmosatmosphere?

1)oxygen
2)ammonia
3)nitrogen
4)methane

User Alfredo Solano
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1 Answer

3 votes
1) oxygen because without it there cant be any organisms to survive earth so without oxygen there was no life
User Lakshmanan
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