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← Nature & AnimalsWhich consequence commonly develops when raptors soar utilizing thermals?
A)Reduced hovering maneuverability occurs downstream
B)Increased metabolic rates decrease predation efficiency
C)Feather wear elevates aerodynamic parasite drag✓
D)Air sac collapse lowers oxygen assimilation
💡 Explanation
Increased thermal soaring subjects flight feathers to elevated mechanical stress creating higher wear; this generates greater aerodynamic parasite drag because damaged barbs no longer create smooth airflow; therefore, drag increases rapidly rather than soaring efficiency improving.
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