How is noise pollution a major threat to the quality of human life ?Suggest any two ways to reduce it .
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Noise pollution has several ill effects on human beings. The most direct harmful effect of excessive noise is physical damage to the ear and the temporary or permanent hearing loss often called as 'temporary threshold shift' (TTS). Person suffering from the condition is unable to detect weak sounds. However, hearing ability is usually recovered within a month of exposure. Permanent loss usually called 'noise-induced permanent threshold shift' (NIPT's) represents a loss of hearing ability from which there is no recovery. The sound of 100 dB leads to permanent loss of hearing. Noise of about 90 dB causes auditory fatigue.
REDUCTION
Plants have the attribute of absorbing and dissipating sound energy. Therefore, trees can be planted along highways, streets and other places exposed to noise pollution. Plantation of trees around residential areas can also act as effective noise barriers. Potential tree species for this purpose include tamarind
The person exposed to the noise can also control noise pollution through use of wearing devices like earplugs and earmuffs. Specially designed earmuffs can reduce the sound level reaching the ear drum by as much as 40 dB.
REDUCTION
Plants have the attribute of absorbing and dissipating sound energy. Therefore, trees can be planted along highways, streets and other places exposed to noise pollution. Plantation of trees around residential areas can also act as effective noise barriers. Potential tree species for this purpose include tamarind
The person exposed to the noise can also control noise pollution through use of wearing devices like earplugs and earmuffs. Specially designed earmuffs can reduce the sound level reaching the ear drum by as much as 40 dB.
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