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  2. Human impact on the environment - Wikipedia

    en.wikipedia.org/wiki/Human_impact_on_the...

    Contaminants can come from one of four main sources. These are sewage discharges, industrial activities, agricultural activities, and urban runoff including stormwater. [153] Water pollution may affect either surface water or groundwater. This form of pollution can lead to many problems. One is the degradation of aquatic ecosystems.

  3. Environmental issues - Wikipedia

    en.wikipedia.org/wiki/Environmental_issues

    [3] Environment destruction caused by humans is a global, ongoing problem. [4] Water pollution also cause problems to marine life. [5] Some scholars believe that the projected peak global population of roughly 9-10 billion people could live sustainably within the earth's ecosystems if humans worked to live sustainably within planetary boundaries.

  4. Pollution - Wikipedia

    en.wikipedia.org/wiki/Pollution

    Pollution is the introduction of contaminants into the natural environment that cause harm. [1] Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.

  5. Water pollution - Wikipedia

    en.wikipedia.org/wiki/Water_pollution

    Nutrient pollution caused by Surface runoff of soil and fertilizer during a rain storm Nutrient pollution, a form of water pollution, refers to contamination by excessive inputs of nutrients. It is a primary cause of eutrophication of surface waters (lakes, rivers and coastal waters ), in which excess nutrients, usually nitrogen or phosphorus ...

  6. Noise pollution - Wikipedia

    en.wikipedia.org/wiki/Noise_pollution

    Anthropogenic noise, originating from human activities, has increased underwater noise in the natural sound environment of the reefs. [86] The preeminent sources of noise pollution on coral reefs are boat and ship activities. [87] The sound created by the crossing of boats and ships overlaps with the natural sounds of the coral reef organisms.

  7. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    Outdoor particulate pollution was the largest cause of death (4.7 million), followed by indoor air pollution (3.1 million) and ozone (0.5 million). [5] A study published in 2019 estimated that, for 2015, the number was around 8.8 million, with 5.5 million of these premature deaths due to air pollution from human sources.

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