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  2. Household air pollution - Wikipedia

    en.wikipedia.org/wiki/Household_air_pollution

    Household air pollution (HAP) is a significant form of indoor air pollution mostly relating to cooking and heating methods used in developing countries. [1]

  3. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    Air pollution can occur naturally or be caused by human activities. [4] Air pollution causes around 7 or 8 million deaths each year. [5] [6] It is a significant risk factor for a number of pollution-related diseases, including heart disease, stroke, chronic obstructive pulmonary disease (COPD), asthma and lung cancer.

  4. Water pollution - Wikipedia

    en.wikipedia.org/wiki/Water_pollution

    Nonpoint source air pollution affects air quality, from sources such as smokestacks or car tailpipes. Although these pollutants have originated from a point source, the long-range transport ability and multiple sources of the pollutant make it a nonpoint source of pollution; if the discharges were to occur to a body of water or into the ...