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photoshop1234 [79]
3 years ago
11

20. Most of today’s organisms could not have lived on Earth 3.6 billion years ago because there was no _____ in the air then.

Biology
1 answer:
Alinara [238K]3 years ago
6 0
Oxygen, mostly bacteria and they ran on glycolosis
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They can be used to contain cellular waste and to isolate materials that may be harmful to the cell.
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If both the biceps and triceps muscle contract at the same time, what happens?
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Explanation:

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2 years ago
tall pea plants are dominant to short pea plants. A tall pea plants (TT) is crossed with a short pea plant(tt).
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3 years ago
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podryga [215]
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3 years ago
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