Air pollution Every large city has to contend in some way with air pollution, which clouds the sky, injures plants, and damages properties. The air pollution reduces the beauty of nature. Air pollution level became dangerously high over large cities as New York City, Cairo, and Los Angeles. Air pollution in those cities led to the establishment of much stronger emission standards for industry and automobiles. Air pollution is a major health problem for all …
showed first 75 words of 355 total

showed last 75 words of 355 total
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