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Svetach [21]
3 years ago
7

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

Biology
2 answers:
Effectus [21]3 years ago
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]3 years ago
3 0
You’re answer is A- Cambrian
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