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← Nature & AnimalsWhich outcome occurs when beaver's tail temperature rises significantly during physical activity in cold water?
A)Reduces thermal skin insulation value✓
B)Elevates counter-current heat exchange
C)Facilitates arterial blood heat retention
D)Increases metabolic oxygen delivery locally
💡 Explanation
Increased tail temperature triggers vasodilation, leading to increased blood flow from the tail’s surface and reducing thermal insulation, because heat escapes more efficiently. This therefore reduces thermal skin insulation, rather than retaining arterial heat due to its role in the heat dissipation.
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