Question

What is the composition of air in the ancient times
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Answer 1

Answer:

Two billion years ago, the Earth's atmosphere consisted of water vapor, carbon dioxide, methane, and ammonium, with little or no free oxygen. Supposedly, the high content of greenhouse gases in the ancient Earth's atmosphere, primarily.

Explanation:

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Answer 2

Two billion years ago, the Earth's atmosphere consisted of water vapor,carbon dioxide, methane, and ammonium, with little or no free oxygen. Supposedly, the high content of greenhouse gases in the ancient Earth's atmosphere, primarily.

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