When drawing a deep breath of fresh air, some people encounter an unpleasant greeting, as chemicals and other substances have tainted the cleanliness of their air, which may cause one to choke and cough. Across the globe, the issue of air pollution has become a hot topic, as scientists blame a large amount of deaths and respiratory disease on its widespread effects. Although enforced air quality standards (such as the Clean Air Act in the United States) have helped to reduce the presence of some pollutants, it is the responsibility of the entire world to follow prevention measures in order to help protect the future of the planet.
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