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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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Sorry wasn't able to answer the last two blanks

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6 0
3 years ago
Explain the importance of the change in minute ventilation with exercise.
melomori [17]
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Daniel [21]

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Leviafan [203]
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8 0
4 years ago
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nignag [31]

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5 0
3 years ago
Read 2 more answers
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