It is believed that cetaceans evolved from:
A) a terrestrial mammal.
B) a pinniped.
C) fishes.
D) polychaetes.
E) dinosaurs.
Correct Answer:
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Q16: Sea otters consume nearly _% of their
Q17: The leopard seal's primary predator is called
Q18: The structure used to amplify an elephant
Q19: Sea otters are protected from the cold
Q20: Pinnipeds molt
A) in the ocean.
B) on shore.
C)
Q22: The following are all similarities between sirenians
Q23: Baleen plates are composed of:
A) calcium carbonate.
B)
Q24: The food of most baleen whales consists
Q25: To reduce drag whales have eliminated
A) external
Q26: The sirenians
A) rest on shore.
B) bear young
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