Concept explainers
Some bats have specially shaped noses that focus ultrasound echolocation pulses in the forward direction. Why is this useful?
A. Increasing intensity reduces the time delay for a reflected pulse.
B. The energy of the pulse is concentrated in a smaller area, so the intensity is larger; reflected pulses will have a larger intensity as well.
C. Increasing intensity allows the bat to use a lower frequency and still have the same spatial resolution.
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