When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. NOx - Wikipedia

    en.wikipedia.org/wiki/NOx

    A recent study conducted by the University of California Davis found that adding nitrogen fertilizer to soil in California is contributing 25 percent or more to state-wide NO x pollution levels. [18] When nitrogen fertilizer is added to the soil, excess ammonium and nitrate not used by plants can be converted to NO by microorganisms in the soil ...

  3. Nutrient pollution - Wikipedia

    en.wikipedia.org/wiki/Nutrient_pollution

    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, stimulate algal growth. [1]

  4. Occupational hazard - Wikipedia

    en.wikipedia.org/wiki/Occupational_hazard

    The Occupational Safety and Health Administration (OSHA) establishes enforceable standards to prevent workplace injuries and illnesses. [2] In the EU, a similar role is taken by EU-OSHA. Occupational hazard, as a term signifies both long-term and short-term risks associated with the workplace environment.

  5. Pollution - Wikipedia

    en.wikipedia.org/wiki/Pollution

    Air pollution control system, known as a thermal oxidizer, decomposes hazard gases from industrial air streams at a factory in the United States. A dust collector in Pristina, Kosovo. Pollution control is a term used in environmental management. It refers to the control of emissions and effluents into air, water or soil.

  6. Environmental health policy - Wikipedia

    en.wikipedia.org/wiki/Environmental_health_policy

    These types of emissions can affect respiratory health, the risk of cancer, and increased medical costs for the population. In 2013, transportation was more than half on carbon monoxide and nitrogen oxides produced in the environment. [22] The country has also implemented vehicle emission standards to cut pollution from motor vehicles.

  7. Latest EPA assessment shows almost no improvement in river ...

    www.aol.com/news/latest-epa-assessment-shows...

    The nation’s rivers and streams remain stubbornly polluted with nutrients that contaminate drinking water and fuel a gigantic dead zone for aquatic life in the Gulf of Mexico, according to a ...

  8. Critical load - Wikipedia

    en.wikipedia.org/wiki/Critical_load

    Air pollution research in relation to critical loads has focused on nitrogen and sulfur pollutants. After these pollutants are emitted into the atmosphere, they are subsequently deposited into ecosystems. Both sulfur and nitrogen deposition can acidify surface waters and soils.

  9. 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.