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← Nature & AnimalsWhich mechanism buffers rapid pressure changes during avian flight?
A)Pneumatic bones increase respiratory efficiency
B)Air sacs enable unidirectional airflow✓
C)Furcula stores elastic potential energy
D)Barbules interlock feather microstructure stability
💡 Explanation
Unidirectional airflow helps maintain stable oxygen levels because air sacs facilitate continuous flow by acting as reservoirs, therefore blood oxygen regulation is improved during exercise, rather than oscillations reflecting wingbeats.
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