Multiple Choice
Which of the following groups share the characteristic of having an amniotic sac or egg?
A) amphibians, mammals, and crocodiles
B) sharks, amphibians, and ray-finned fishes
C) mammals, crocodiles, and reptiles/birds
D) reptiles/birds, crocodiles, and amphibians
Correct Answer:

Verified
Correct Answer:
Verified
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