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← Nature & AnimalsWhich outcome occurs when a migratory bird's nutrient reserves deplete excessively during sustained soaring?
A)Enhanced lift due to altered thermals
B)Reduced maneuverability for predator avoidance✓
C)Increased efficiency in mitochondrial respiration
D)Improved plumage for radiative heat control
💡 Explanation
Reduced maneuverability results because diminished fuel impacts wing loading, decreasing lift responsiveness through increased stall speed; this directly hinders aerodynamic control rather than aiding thermally because of the increased mass, therefore reducing the speed to initiate lift, rather than benefiting metabolic processes.
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