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11 August, 04:02

Suggest a hypothesis why endotherms have independently evolved a 4-chambered heart if mixing of blood seems not to be a major issue. what else makes a 4-chambered heart preferable for sustaining the high metabolic oxygen demand of tissues in endotherms?

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  1. 11 August, 07:48
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    The 4 chambered heart is cheaper to maintain and manufacture.
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