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24-01-2020
Biology

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Scientists argue that the first organisms on earth were ___ --- that is, their metabolism did not require oxygen.
1) multi-cellular
2) anearobic
3) aerobic

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jamkbyron jamkbyron

24-01-2020

Answer:

2, anaerobic

Explanation:

Anaerobic respiration is the process that transfers glucose to cells without the need for oxygen.

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