Biology, 26.03.2021 15:10, barnhill6534
One theory of early life on Earth states that the first life forms did not use oxygen for respiration and were unable to make their own food. Based on this theory, which types of organisms were most likely present?
aerobic, autotrophic bacteria
aerobic, heterotrophic bacteria
anaerobic, autotrophic bacteria
anaerobic, heterotrophic bacteria
Answers: 1
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One theory of early life on Earth states that the first life forms did not use oxygen for respiratio...
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