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Nature & Animals

Which outcome occurs when beluga whales enter warmer waters after prolonged Arctic foraging?

A)Peripheral vasodilation increases heat dissipation
B)Brown fat metabolism elevates body temperature
C)Countercurrent exchange conserves core heat
D)Shivering thermogenesis counteracts heat gain

💡 Explanation

Increased peripheral vasodilation allows more blood flow to the skin’s surface, therefore increasing heat dissipation to the water. This offsets the warmer environment rather than retaining heat through countercurrent exchange in the fins and blubber, because brown fat is more for heating and muscles cause shivering.

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