Question

Q18. Explain the significance of four
chambered heart over three chambered
heart in context of specific animals having
such hearts?​

Answer 1

Explanation:

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Answer 2

Answer:

Mammals and birds have the most efficient heart with four chambers that completely separate the oxygenated and deoxygenated blood; it pumps only oxygenated blood through the body and deoxygenated blood to the lungs.

Explanation:

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