OpenStudy (anonymous):

Nearly all mammals have seven cervical (neck) vertebrae. This fact implies that: all mammals have to stretch their necks to obtain food. predators prefer to eat animals with either six or eight cervical vertebrae. all mammals descended from a common ancestor. all animals can turn their heads the same amount.

3 years ago
OpenStudy (shreehari499):

all mammals descended from a common ancestor...i think so..:)

3 years ago
OpenStudy (anonymous):

Correct!

3 years ago
OpenStudy (anonymous):

is it all mammals descended from a common ancestor.

3 years ago
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