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Q.

Is it true that the dolphin uses the principle of echo to locate small fish as it preys?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
Yes, the dolphin uses echolocation to locate small fish as it hunts. And this happens when they emit high frequencies of ultrasonic sound, and these sound waves then strike the obstacles and reflect back to the dolphins, and by this, they use them to locate their prey.
 
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