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← Nature & AnimalsWhich outcome improves during avian soaring flight because reduced turbulence?
A)Delayed stall at low speeds✓
B)Increased parasite drag wingtip vortices
C)Enhanced boundary layer separation risks
D)Premature induced drag from airfoil
💡 Explanation
Delayed stall occurs because birds exploit laminar flow; *post-stall lift enhancement* lowers pressure drag that decreases wing's stall angle, therefore stalling later than predicted by conventional stall, rather than increasing parasite drag from turbulence.
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