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← Nature & AnimalsWhich outcome occurs in desert rodents when ambient temperatures rise, impacting evaporative cooling?
A)Tail vasodilation increases heat dissipation✓
B)Brown fat metabolism triggers shivering
C)Countercurrent exchange conserves water
D)Kidney filtration rate increases sharply
💡 Explanation
Increased ambient temperature triggers vasodilation in the rodent's tail because this increases the surface area for radiative heat loss. Therefore excess heat can leave the body rather than cause hyperthermia through insulation alone.
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