why noise pollution is harmful
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a sound level meter,basic tool in measuring sound.unwanted sound can damaged psychological health.
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noise pollution is harmful as it can cause problems to ears, loud noise of dj's and mobile phone's,etc.can damage our ears .
singhmedicine:
noise pollution has two type of effects auditory in this loos of hearing it may be temporary or permanent other effects nonauditory in this annoyance agitation short temper high bp performance decrese
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