Which mechanism prevents boundary layer separation, maximizing lift in avian soaring?

💡 Explanation

The alula, a specialised feather, creates vortex generators on the wing's leading edge; this uses flow reattachment to accelerate the boundary layer, preventing stalling. Therefore, lift increases; rather than alternatives involving oxygen, renal function, or cooling.

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• Which risk increases when ecdysone secretion dysregulation affects imaginal discs?
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