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← Nature & AnimalsWhich outcome occurs to warning cries when ambient noise increases?
A)Detection range of cries decreases✓
B)Cries become universally understandable species
C)Vocalizations trigger heightened aggregation behaviour
D)Frequency content of alarm calls broadens
💡 Explanation
Background noise masks the signal, creating masking, because signal-to-noise ratio decreases. Therefore, detection range decreases. Increased noise primarily limits clarity, rather than fundamentally shifting call meaning or spectral properties given equivalent receiver sensitivity.
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