Question

Why does all mammals have seven vertebrae (bones) in their neck?

A) all mammals descended from a common ancestor
B) predators only eat animals with six neck vertebrae
C) all animals can turn their heads the same amount
D) all mammals have to stretch their necks to obtain food

Answer 1

It has to do with evolution.
A. All mammals descended from a common ancestor.
* Descending from a common ancestor has to do with evolution.

Answer 2

C I hope I'm right........

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