Question

What is echo????????
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Answer 1

Answer:

Echo is a sound or sounds caused by the reflection of sound waves from a surface back to the listener.

Mark it as the brainliest answer.

Answer 2

Explanation:

Sync, short for "synchronize," is a verb for making things work together. When you lip-sync, you are moving your mouth to exactly match someone else's words spoken or sung at precisely the same time.

Answer 3

Explanation:

Sync, short for "synchronize," is a verb for making things work together. When you lip-sync, you are moving your mouth to exactly match someone else's words spoken or sung at precisely the same time.