What is the difference between CF-FM calls and CF calls in bats?
A)CF-FM calls involve long calls at a single frequency; FM calls involve a modulation of frequencies.
B)CF-FM calls involve a modulation of frequencies; FM calls use a single signal at a high frequency.
C)CF-FM calls require a loud initial call followed by a decrease in amplitude; FM calls use only a single amplitude.
D)CF-FM calls involve a series of calls at different amplitudes spaced out in a rhythmic pattern; FM calls use a single signal at a low amplitude.

Question

Quizplus · Accepted Answer

CF-FM calls involve long, constant frequency calls followed by frequency modulated signals, whereas FM calls use a single signal at a high frequency without any modulation.

What Is the Difference Between CF-FM Calls and CF Calls