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Echo is the phenomenon occurred due the reflection of sound and reaching our ear after 1/10th of a second .
16.5m is the distance
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It is because sea water contains salts which makes it denser ,and hence more upthrust is applied on our bodies by water
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shikhar40:
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1 Echo is the phenomenon occurred due the reflection of sound and reaching our ear after 1/10th of a second .
16.5m is the distance
2 It is because sea water contains salts which makes it denser ,and hence more upthrust is applied on our bodies by water
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