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← Nature & AnimalsWhich outcome follows when a marine iguana emerges onto cold rocks after swimming?
A)Cutaneous vasoconstriction reduces heat loss
B)Vasodilation allows rapid heat absorption✓
C)Increased shivering generates internal heat
D)Fur traps an insulating air layer
💡 Explanation
Marine iguanas bask to raise body temperature. Vasodilation causes blood vessels near the skin's surface to widen, therefore accelerated heat absorption happens because more warm blood reaches the periphery, rather than vasoconstriction which reduces surface heat exchange.
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