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  2. Nitrogen cycle - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_cycle

    The nitrogen cycle is an important process in the ocean as well. While the overall cycle is similar, there are different players [40] and modes of transfer for nitrogen in the ocean. Nitrogen enters the water through the precipitation, runoff, or as N 2 from the atmosphere. Nitrogen cannot be utilized by phytoplankton as N

  3. Nitrogen and Non-Protein Nitrogen's effects on Agriculture

    en.wikipedia.org/wiki/Nitrogen_and_Non-Protein...

    Nitrogen is an element vital to many environmental processes. Nitrogen plays a vital role in the nitrogen cycle, a complex biogeochemical process that involves the transformation of nitrogen between different chemical forms and its movement through various environmental compartments such as the atmosphere, soil, water, and living organisms. [1]

  4. 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]

  5. Halve meat and dairy in diet to reduce nitrogen pollution ...

    www.aol.com/halve-meat-dairy-diet-reduce...

    The goal is to reduce nitrogen waste from farmers’ fields by 50% by 2030. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...

  6. Ecosystem - Wikipedia

    en.wikipedia.org/wiki/Ecosystem

    Until modern times, nitrogen fixation was the major source of nitrogen for ecosystems. Nitrogen-fixing bacteria either live symbiotically with plants or live freely in the soil. The energetic cost is high for plants that support nitrogen-fixing symbionts—as much as 25% of gross primary production when measured in controlled conditions.

  7. Environmental impact of agriculture - Wikipedia

    en.wikipedia.org/wiki/Environmental_impact_of...

    The pollution may come from a variety of sources, ranging from point source water pollution (from a single discharge point) to more diffuse, landscape-level causes, also known as non-point source pollution and air pollution. Once in the environment these pollutants can have both direct effects in surrounding ecosystems, i.e. killing local ...

  8. Natural environment - Wikipedia

    en.wikipedia.org/wiki/Natural_environment

    Global biogeochemical cycles are critical to life, most notably those of water, oxygen, carbon, nitrogen and phosphorus. [36] The nitrogen cycle is the transformation of nitrogen and nitrogen-containing compounds in nature. It is a cycle which includes gaseous components.

  9. Nitrate in the Mississippi River Basin - Wikipedia

    en.wikipedia.org/wiki/Nitrate_in_the_Mississippi...

    Negative effects on the environment can be observed when these different forms of nitrogen are in excess. The Environmental Protection Agency has set a maximum of 10 mg/L nitrate concentration in drinking and surface waters. [3] When nitrogen in the form of nitrate is in excess, it can lead to a dead zone.