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When did stromatolites appear on Earth? A. Hadean B. Mesozoic C. Archean
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40 votes
40 votes
When did stromatolites appear on Earth?

A. Hadean
B. Mesozoic
C. Archean

User Laurent LA RIZZA
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2 Answers

12 votes
12 votes

Answer: It's C: Archean

Explanation: I got it right on the quiz.

User Morteng
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3.3k points
14 votes
14 votes

Answer:

It would be D. Proterozoic because they appeared 542 million years ago.

User Nnn
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