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The Phosphorus Cycle
The Phosphorus Cycle
Ocean Sediments
Biotic Organisms
Phosphate sits in ocean sediments for a long time before geological uplift brings it back to the surface, where it is weathered as the cycle begins again. It takes so long for geological uplift to take phosphate back to the surface that the phosphorous cycle is one of the longest cycles.
From plants, phosphate moves into the animals that eat the plants. It then moves from plant and animal remains to the decomposers. The bones and teeth of the animals, where calcium phosphate is found, move into the ground, and are deposited into ocean sediments.
Soil and Rivers
From the soil and rivers, the phosphate either is absorbed by plants or is runoff into the oceans. The phosphate in the ocean in then deposited into ocean sediments.
Rocks And Fossils
Bibliography
Most Phosphorus is found in the form of phosphate. The main source of phosphate is rocks and fossils. Due to weathering, they are exposed, dislodged and dissolved into soil and rivers.
Ritter, B., Burley, K. L., & Fraser, D. (2007). Nelson: Biology Alberta 20-
30. (pp. 63-64). Toronto: Nelson.
Winter, M. ((n.d.)). Retrieved from http://www.webelements.com/
The Environmental Literacy Council. ((n.d.)). Retrieved from http://
www.enviroliteracy.org/article.php/480.html