Bioacoustics is the study of the relation between living organisms and sound, focusing on the neurophysiological, anatomical, and evolutionary basis of sounds produced and detected by animals, especially those involved in communication. It was established as a scientific discipline by Slovene biologist Ivan Regen, whose experiments with crickets in the early 20th century proved that insects respond to acoustic stimuli produced by other individuals. What animal sounds are humans unable to hear? Discuss

Source: The Free Dictionary

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