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In the development of dogs, monkeys and dolphins, nourishment and oxygen are provided by the mother to the fetus through the

A:) Excretory system

B:) Cloaca

C:) Placenta

D:) Both (B) and (C)

User Socob
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2 Answers

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Hi, It’s C the placenta it gives oxygen to most mammals

User Fredblabla
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i believe the answer is C, Placenta

User Oliver Benning
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