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Nature & Animals

Which constraint causes greater noctuid moth mortality when higher-frequency bat calls occur?

A)Reduced tympanal vibration efficiency
B)Interference with courtship displays
C)Increased Brownian motion effects
D)Disrupted pheromone plume tracking

💡 Explanation

Higher frequency sounds drive smaller resonators inefficiently; tympanal vibration uses frequency to detect approaching bats. Amplitude discrimination thus fails because auditory masking is increased, therefore moths can't evade, rather than other forms which have unrelated causal mechanisms under noise constraints.

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