christine brown &soraya davila &honny wong & mary chavez phosphorus biogeochemical cycle
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C H R I S T I N E B R O W N & S O R A Y A D A V I L A & H O N N Y W O N G & M A R Y C H A V E Z
PHOSPHORUS BIOGEOCHEMICAL CYCLE
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WHAT IS PHOSPHORUS?
Phosphorus powder
• Phosphorus is the 15th element on the periodic table, represented by the letter “P”.• When pure it is colorless and transparent. • Phosphorus was discovered in 1669 by Brand,
who prepared it from urine. Brand attempted to distill salts by evaporating urine.
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WHERE CAN YOU FIND PHOSPHORUS?
•Fertilizers•Animal effluent (Feces/Urine)•Natural weathering of rocks (basically erosion!)
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CYCLE!
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HOW DOES IT AFFECT WATER WAYS?
• Phosphorus binds with soil and only dissolves slowly in water overtime. • These can include: ErosionFarm runoff (fertilizer)• Phosphorus “starves” streams of
oxygen, thus affecting aquatic life in a negative manner.
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WAYS TO MANAGE PHOSPHORUS IN WATERWAYS.
Prevent direct application of fertilizer to waterways by:• Controlling runoff before it reaches the water.• Avoiding applying phosphate fertilizer if you know
heavy rain is coming.• Trying to prevent overgrazing that can ultimately lead to erosion.
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BENEFITS FOR HUMANS
• Phosphorus is a mineral mostly stored in your bones, teeth, DNA and cell membranes. • It is important for many biochemical
reactions such as converting the foods you eat into the energy your body needs every day. • Phosphorus also helps with muscle
contraction, nerve and kidney functions.
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FUN FACTS:
• We must have phosphorus to live!• Holds DNA and RNA together• Chemical component for ATP• 80% of phosphorus is found in teeth in bones• Largest reservoir of phosphorus is in sedimentary rocks• Phosphorus in waterways encourage the growth of nuisance aquatic plants/algae.
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WORKS CITED
• "Geography4Kids.com: BGC Cycles: Phosphorus Cycle." Rader's GEOGRAPHY 4 KIDS.COM. Web. 23 Nov. 2010. <http://www.geography4kids.com/files/cycles_phosphorus.html>.
• Jegtvig, By Shereen. "Phosphorus - What Is Phosphorus." Nutrition - About Nutrition and Diet. Web. 23 Nov. 2010. <http://nutrition.about.com/od/nutrition101/g/phosphorusglossary.htm>.
• "Managing Farm Phosphorus." EW Environment Waikato. Web. 23 Nov. 2010. <http://www.ew.govt.nz/environmental-information/Land-and-soil/Managing-Land-and-Soil/Managing-farm-nutrients/Managing-farm-phosphorus/>.
• "Phosphorus Cycle." The Environmental Literacy Council. Web. 23 Nov. 2010. <http://www.enviroliteracy.org/article.php/480.html>.