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The Phosphorus Cycle

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Jonathan Gaspar

on 21 September 2012

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Transcript of The Phosphorus Cycle

By Miguel, Jordan, and Jonathan The Phosphorus Cycle Chemical Reactions Essentially any living organism that has been exposed to phosphorus, or has eaten plants/algae or other animals that have been exposed to phosphorus Organic Reservoirs rock formations, marine sediments and fertilizers Inorganic Reservoirs Path Ways of Movement Human Impact on Cycle Box Diagram For example tuna, salmon, sardine, liver , turkey, and chicken all contain Phosphorus Phosphorous can be found cycling through rocks, water, and soil. Phosphorus doesn’t have a gaseous state because it’s liquid at normal pressure and temperature because of this it is considered the slowest cycle. Phosphorus is normally found in rock formations and sediments as phosphate salts. The Phosphorus in these rock formations and sediments dissolve into soil water, which inturn will be absorbed by plants, these plants are then eaten by animals, and finally the animals die or release phosphorus through excrement which then begin to decompose, during the process of decay phosphorus returns to the soil or oceans again, and then back to rock formations and sediments. Alternatively it could also go into the soil through fertilizers containing phosphate, then to soil, then plants, then animals, from there through decay or excretion, and finally back to oceans and marine sediments. phosphorus can also travel from phosphate mines and detergents/cleaners which dissolve in water and runoff into major bodies of water. Bibliography
Friedland, Andrew J., Rick Relyea, and David Courard-Hauri. Environmental Science for AP*. New York: W. H. Freeman, 2012. Print.
"Phosphorus - P." Phosphorus (P). N.p., n.d. Web. 20 Sept. 2012. <http://www.lenntech.com/periodic/elements/p.htm>.

"Matter Cycles and Pollution." Matter Cycles and Pollution. N.p., n.d. Web. 20 Sept. 2012. <http://www.lenntech.com/matter-cycles-pollution.htm>.

"Phosphorus - P." Phosphorus (P). N.p., n.d. Web. 21 Sept. 2012. <http://www.lenntech.com/periodic/elements/p.htm>. Human impact on the phosphorus cycle comes mainly from fertilizers.
We remove phosphates from certain locations to apply it on farmland as fertilizers.
On farmland, where plants do not take in all the phosphates, the phosphorus in the fertilizer creates runoff when it rains, which is deposited into lakes or streams, thus leading to eutrophication.
Eutrophication: a process where water bodies receive excess nutrients that stimulate excessive plant growth (algal bloom). In Nature Phosphorus is never found in its pure form, instead it is encountered as Phosphate (PO3−4) which is created when a phosphorous atom bonds to four oxygen atoms.
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