Multiple Choice
Which features allow for heat retention in a vertebrate?
A) Feathers of birds and fat of cetaceans
B) Fur of mammals and leathery skin of sharks
C) Watertight skin of reptiles and feathers of birds
D) Leathery skin of sharks and fat of cetaceans
E) Fur of mammals and watertight skin of reptiles
Correct Answer:

Verified
Correct Answer:
Verified
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