Nitrogen cycle: Difference between revisions
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On Earth, [[atom]]s of the [[chemical element]], [[nitrogen]] (atomic symbol, N; number of [[proton]]s, 7; [[Atomic mass|standard atomic weight]], 14.0067) — an essential element for Earth's [[Life|living systems]] — undergo cyclical movement through the [[atmosphere]], the crust ([[lithosphere]]), [[water]] compartments ([[hydrosphere]]), living systems, and non-living organic matter, in a process called the <b>nitrogen cycle</b>, or more specifically, the biogeochemical nitrogen cycle.<ref name=nasa1>[http://soil.gsfc.nasa.gov/NFTG/nitrocyc.htm The Nitrogen Cycle: Nitrogen Transformations in Soil, Water, and Air.]</ref> (<small>''View | On Earth, [[atom]]s of the [[chemical element]], [[nitrogen]] (atomic symbol, N; number of [[proton]]s, 7; [[Atomic mass|standard atomic weight]], 14.0067) — an essential element for Earth's [[Life|living systems]] — undergo cyclical movement through the [[atmosphere]], the crust ([[lithosphere]]), [[water]] compartments ([[hydrosphere]]), living systems, and non-living organic matter, in a process called the <b>nitrogen cycle</b>, or more specifically, the biogeochemical nitrogen cycle.<ref name=nasa1>[http://soil.gsfc.nasa.gov/NFTG/nitrocyc.htm The Nitrogen Cycle: Nitrogen Transformations in Soil, Water, and Air.]</ref> (<small>''View images of nitrogen cycle by right-clicking these links [http://soil.gsfc.nasa.gov/NFTG/nitrocyc.htm link1] [http://www.britannica.com/EBchecked/topic-art/416271/118424/The-nitrogen-cycle link2] & selecting 'open in new tab'.''</small>) | ||
==References== | ==References== | ||
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Revision as of 23:15, 23 March 2010
On Earth, atoms of the chemical element, nitrogen (atomic symbol, N; number of protons, 7; standard atomic weight, 14.0067) — an essential element for Earth's living systems — undergo cyclical movement through the atmosphere, the crust (lithosphere), water compartments (hydrosphere), living systems, and non-living organic matter, in a process called the nitrogen cycle, or more specifically, the biogeochemical nitrogen cycle.[1] (View images of nitrogen cycle by right-clicking these links link1 link2 & selecting 'open in new tab'.)