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← Nature & AnimalsWhich outcome results when avian air capillaries increase gas volume, leading to differential pressure?
A)Optimized countercurrent gas exchange across membranes✓
B)Reduced bird mass for sustained flight
C)Inefficient thermoregulation during rapid movement
D)Decreased respiratory rate at higher altitudes
💡 Explanation
Increased air capillary gas volume drives efficient oxygen uptake via increased differential pressure which enables countercurrent exchange between the blood and air because oxygenation is faster than diffusion rather than heat dissipation being dominant.
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