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Because echos are created by sound waves bouncing off of walls, and people and furniture block the walls and the space for the echo to bounce back. If you throw a handball at a wall it will bounce back, but if you throw a handball in a room with a bunch of people it will hit one of these aforementioned people and they will be very unhappy, as they have a right to be. SEEWHATIMSAYIN.

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14y ago

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Why do we hear an echo?

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