Why free oxygen was not found in primitive atmosphere?

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asked Feb 9, 2021 10.6k views

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Eeji · Answer 1 · 2021-02-16T05:00:58+0000

Answer:There was no oxygen in the early air until basic life forms developed the ability to complete photosynthesis. During this cycle, daylight and carbon dioxide are utilized to make energy, delivering oxygen as a result.

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Why free oxygen was not found in primitive atmosphere?

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Why free oxygen was not found in primitive atmosphere?