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← Nature & AnimalsWhich risk drastically increases with wing surface area reduction during avian soaring flight behavior?
A)Increased descent rate impairs thermaling✓
B)Decreased lift destabilizes controlled banking
C)Induced drag overheats flight muscle
D)Aspect ratio fluctuations damage feathers
💡 Explanation
When wing surface area decreases, wing loading and thus the sink rate increases because weight supported by less surface area induces higher downward velocity component reducing lift. Therefore, an increased descent rate impairs thermaling results rather than banking instability or feather stress which require higher forces.
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