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Author Question: The only vertebrates in which blood flows directly from respiratory organs to bo (Read 472 times)

luvbio

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on: Sep 7, 2013
The only vertebrates in which blood flows directly from respiratory organs to body tissues without first returning to the heart are the
A)  amphibians.
B)  birds.
C)  fishes.
D)  mammals.
E)  reptiles.


coco

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Reply #1 on: Sep 9, 2013
Choose C

GL


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