Which of the following gases was the least abundant in the earth's atmosphere 3.5 billion years ago? a) carbon dioxide b) nitrogen c) oxygen d) hydrogen e) water vapor

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asked Oct 13, 2023 145k views

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Which of the following gases was the least abundant in the earth's atmosphere 3.5 billion years ago? a) carbon dioxide b) nitrogen c) oxygen d) hydrogen e) water vapor

Geography
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Answer:

oxygen

Step-by-step explanation:

Oxygen was the least abundant in the earth's atmosphere 3.5 billion years ago

Dbburgess answered Oct 19, 2023

by Dbburgess

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