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Katarina [22]
3 years ago
6

Vestigial structures, such as hip bones in whales and appendixes

Biology
1 answer:
monitta3 years ago
8 0

Answer:

A.

Explanation:

Humans used to use the appendix for good bacterial health in the gut. People used to drink dirty water and eat food that had lots of bacteria. The appendix would save them from infection.

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