a) What is ultrasound? Name two animals which produced ultrasound.
b) How are moths of certain families able to escape capture from bats?
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(I) Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Animals Which Produce Ultrasound Sounds Are (I) Bats, (ii) Whales.
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a) The waves of frequency greater than 20,000 Hz are known as ultrasonic waves or ultrasound. This type of sound are produced by Dolphin, bats etc. to locate its prey.
b) The moths that are able to escape from capture of bats have very sensitive hearing equipment which enables them to hear the high frequency squeaks of bats and thus they fly away from that place and escape the capture.
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