Multiple Choice
Why do sloths have eight cervical vertebrae, even though most mammals have seven?
A) because they have low metabolic rates
B) because they are arboreal and require extra flexibility in their neck
C) because they are a more basal mammal taxon with different metabolic constraints
D) all of the above
E) none of the above
Correct Answer:
Verified
Correct Answer:
Verified
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