Question

what is echo? with giving example
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Answer 1

Answer:

A sound that is repeated as it is sent back off a surface such as the wall of a tunnel.

Hope its help

Answer 2

Answer:

Echo - a sound that is repeated as it is sent back off a surface such as the wall of a tunnel

An example of echo is the repeating of a sound created by footsteps in an empty marble hallway.

hope it helps u.........