gisselleee90 gisselleee90

19-03-2020
Biology

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What was the amount of oxygen in earths early atmosphere

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blatantlyshy blatantlyshy

19-03-2020

Answer:

So oxygen was able to build up in the atmosphere, causing perhaps the most dramatic shift in the history of life on the planet. Before that happened, the amount of oxygen in Earth's atmosphere was about one ten-quadrillionth of the amount present today, Kasting says.

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