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Sladkaya [172]
3 years ago
8

Throwback Question: Scientists theorize that it took a billion years or more for oxygen in the atmosphere to reach the levels of

today. Based on this idea, the first cells could be classified as which of the following?
1 point
aerobic
anaerobic
eukaryotic
protista
Biology
1 answer:
polet [3.4K]3 years ago
7 0

Answer:

anaerobic i think

Explanation:

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