Answered

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What is sound that bounces off something and comes back to where it came from?
ultrasonic
an echo
a beat
a molecule

Sagot :

kat6574

Answer:

it would be an echo because it comes back

melon2329

Answer:

echo

Explanation:

because echo is the bounce back of don't especially heating hard surface......mean like anything dosnt absorb sound.

hope it helps.

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