State two applications of echo.
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(i) Dolphins detect their enemy and obstacles by emitting the ultrasonic waves and hearing their echo. (ii) In medical science, the echo method of ultrasonic waves is used for imaging the human organs such as the liver, gall bladder
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Answer:
The applications of echo: (i) Dolphins detect their enemy and obstacles by emitting the ultrasonic waves and hearing their echo. (ii) In medical science, the echo method of ultrasonic waves is used for imaging the human organs such as the liver, gall bladder, uterus, womb
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