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Complete PICLE corpus of essays by Polish advanced EFL students (330,000)

/^t/Auditory channels are also used in a variety of ways by different species of animals. Fish use high-pitched noises as a form of sonar for locating underwater objects as well as for communicating between individuals. Many insects produce noises through the vibration of wings. There is a wide range of frequency of these sounds, from low-pitched sounds to high-pitched noises produced by bats. Some of these noises are inaudible to other animals.