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3 years ago

6

As various vertebrate groups evolved, the structure of the heart changed. Which of the following describes the heartsame of bird

s and mammals?
A) One atrium and one ventricle
B) Two atria and one ventricle
C) One atrium and two ventricles
D) Two atria and two ventricles

1 answer:

Dahasolnce [82]3 years ago

8 0

Two atria and two ventricles

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