How long ago are prokaryotes believed to have evolved on earth? a. 3.5 million years b. 1.5 billion years c. 2 billion years d. 3.5 billion years

Question

Biology

Blanche

16 May, 07:31

How long ago are prokaryotes believed to have evolved on earth? a. 3.5 million years b. 1.5 billion years c. 2 billion years d. 3.5 billion years

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Answers (2)

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Black · Answer 1

3.5 billion years

Explanation:

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Travis Harris · Answer 2

The correct answer is d. 3.5 billion years.

Prokaryotes were the first forms of life on Earth long before simple multicellular life appeared because of their ability to withstand extreme conditions. It is believed that the first living forms were bacteria combined with archaea in the microbial mat (multi-layered sheet).