what is noise pollution ?
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Noise pollution, also known as environmental noise or sound pollution, is the propagation of noise with ranging impacts on the activity of human or animal life, most of them harmful to a degree. The source of outdoor noise worldwide is mainly caused by machines, transport, and propagation systems.
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Disturbance produced in the environment due to undesirable loud and harsh sound ,of level above 120 dB,from various sources such as loudspeaker,siren, moving vehicles etc. is called noise pollution.
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