Edgywell Edgywell

19-11-2019
Biology

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HELP!! "During the ______ period, the first vertebrates appeared on Earth"

A. Cambrian

B. Ordovician

C. Silurian

D. Devonian

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EvaWilliam EvaWilliam

19-11-2019

Answer:a

Explanation:Vertebrates originated about 525 million years ago during the Cambrian explosion, which saw the rise in organism diversity. The earliest known vertebrate is believed to be the Myllokunmingia.[

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thatgaycoffeecup19 thatgaycoffeecup19

19-11-2019

You’re answer is A- Cambrian

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