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← Nature & AnimalsWhich consequence is experienced if a bird develops frayed feather barbules?
A)Loss of insulation efficiency
B)Increased parasite vulnerability
C)Reduced aerodynamic efficiency✓
D)Higher bone fracture incidence
💡 Explanation
Reduced aerodynamic efficiency occurs because frayed feather barbules disrupt laminar airflow, decreasing lift due to increased drag at the wing surface. Maintaining smooth, overlapping barbs from interlocking barbules optimize flight characteristics, therefore improving efficiency rather than parasitic resistance.
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