Answers

2015-10-16T01:05:12+05:30
Just look in your surroundings and find things that are based on sound write their advantages in your life.
very important we can speak and hear to everyone.
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2015-10-16T04:36:59+05:30

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Ultra sound waves are used in medical field.
Sound is important for humans and animals and birds to communicate effectively.

Sound waves may be used  in certain experiments to determine certain other quantities.  Sound indicates transformation of energy and impact.



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