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many engineers are unaware that noise pollution is a serious problem especially in developing countries |
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as many as 10 million people lost part of their hearing because of noise pollution |
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manufacturers in some states do not label the noise level of products such as chain saws and lawn mowers |
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the amount of noise in our world will also grow since we crowd together with gadgets, machines, and vehicles |
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laws force manufacturers to specify the noise levels of their products, which should not exceed the acceptable levels |