Which was least likely to have been a component of Earth’s atmosphere before life began? A-sulfur B-carbon dioxide C-oxygen D-water vapor

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asked Jul 2, 2019 172k views

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Nakosspy · Answer 1 · 2019-07-07T18:20:48+0000

Oxygen would be what I'd choose. Before life was created was also before plants were around, so there was nothing to create oxygen through photosynthesis.

Which was least likely to have been a component of Earth’s atmosphere before life began? A-sulfur B-carbon dioxide C-oxygen D-water vapor

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