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    Biology Study Set 16
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    Exam 44: Internal Transport
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    The Four-Chambered Heart First Evolved Among The
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The Four-Chambered Heart First Evolved Among The

Question 73

Question 73

Multiple Choice

The four-chambered heart first evolved among the:


A) arthropods.
B) birds.
C) nonavian reptiles.
D) mammals.
E) fishes.

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