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21 November, 13:09

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. 21 November, 14:16
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    The 4 chambered heart is cheaper to maintain and manufacture.
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