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Biology, 15.10.2019 02:00 Spacexx

Unlike amphibians, reptiles
a. have lungs to oxygenate blood.
b. have ventricles that are further divided to lessen mixing of oxygen-rich and oxygen-poor blood.
c. have a closed circulation system in which blood circulates entirely within blood vessels.
d. use single-loop circulatory

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Unlike amphibians, reptiles
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