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The Phosphorus Cycle
Transcript of The Phosphorus Cycle
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.