4 years ago

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

2 answers:

7 0

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.[

Colt1911 [192]4 years ago

3 0

You’re answer is A- Cambrian

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