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gavmur [86]
3 years ago
11

The common ancestors of birds and mammals were very early (stem) reptiles, which almost certainly possessed three-chambered hear

ts (two atria, one ventricle). Birds and mammals, however, are alike in having four-chambered hearts (two atria, two ventricles). The four-chambered hearts of birds and mammals are best described as ___________.
Biology
1 answer:
boyakko [2]3 years ago
8 0

Answer:

Homopalsies

Explanation:

They are the chambers in a mammal and it means a character with shared parts of the body as another speices

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