Finding:

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   Pollution

   Water pollution causes approximately 14,000 deaths per day, mostly due to contamination of drinking water by untreated sewage in developing countries.
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   Light pollution

   Like other forms of pollution, such as air, water and noise pollution, light pollution causes damage to the environment.
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   Air pollution in Hong Kong

   Smog caused by heavy air pollution is clearly visible in this twilight panorama.
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   Nonpoint source pollution

   According to the U.S. Environmental Protection Agency (EPA), nonpoint source pollution is the leading cause of water pollution in the United States today, with polluted runoff from agriculture the primary cause.
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   Smog

   Smog caused by traffic pollution, however, does occur in modern London. ... Natural causes
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   Water pollution

   Each successive step up the food chain causes a stepwise concentration of pollutants such as heavy metals (e.g. mercury) and persistent organic pollutants such as DDT. ... | Pollution |
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   Air pollution

   They advocate strict liability which would hold accountable anyone who causes polluted air to emanate into someone else's airspace. ... | Water pollution |
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   Marine pollution

   Pollution is often classed as point source or nonpoint source pollution. ... An example is directly discharging sewage and industrial waste into the ocean.
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   Ship pollution

   Sources and causes ... Nevertheless, the discharge of ballast water only accounts for a small percentage of oil pollution in the marine environment.
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    Environment of China

    Water pollution is a source of health problems across the country, and air pollution causes up to 1,750,000 premature deaths each year.

Explore the following pages on Powerset:

• Pollution,
• Light pollution,
• Air pollution in Hong Kong,
• Nonpoint source pollution,
• Smog,
• Water pollution,
• Air pollution,
• Marine pollution,
• Ship pollution,
• Environment of China