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← Nature & AnimalsWhich acoustic outcome occurs when a bat's sonar frequencies shift downward sharply?
A)Increased prey surface area contrast
B)Cluttered environments disambiguate
C)Doppler shift compensation fails✓
D)Decreased auditory fovea sensitivity
💡 Explanation
Doppler shift echoes rise in frequency as a bat approaches a moth; the bat uses Doppler shift compensation (DSC). If the bat's emission drops, DSC cannot correctly subtract motion-induced echo shifts. Therefore, speed and location are miscalculated rather than accurately mapped.
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