Biology, 08.06.2021 06:40 nahimi

Oxygen was absent in Earth's early atmosphere. When oxygen levels rose in the atmosphere, what likely occurred? A. Some life went extinct.
B. Some life survived in a few habitats without oxygen. C. All of the above.
D. Some life survived because it had adaptations and/or evolved metabolism that used oxygen.

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Oxygen was absent in Earth's early atmosphere. When oxygen levels rose in the atmosphere, what likel...

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