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← Nature & AnimalsWhich outcome occurs when birds in arctic regions experience extreme cold despite insulation?
A)Increased metabolic heat production via shivering✓
B)Reduced blood flow conserves core heat
C)Countercurrent exchange minimizes heat loss
D)Feather erection offers added insulation
💡 Explanation
Uncontrolled shivering increases metabolic heat production to compensate for heat loss because shivering stimulates muscle contractions, thereby generating heat and preventing hypothermia; therefore shivering is the correct answer rather than peripheral vasoconstriction without shivering.
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