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Phosphorus Cycle

Join the ride through the journey of the Phosphorus Cycle. Learn about things such as the pathway of movement, chemical reactions, and the impact of human intervention.

Amanda Adams

on 10 October 2012

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Transcript of Phosphorus Cycle

The phosphorus cycle is the bio geochemical cycle that describes the movement of phosphorus through the lithosphere, hydrosphere, and biosphere. The Phosphorus Cycle Phosphates move quickly through plants and animals; however, the processes that move them through the soil or ocean are very slow, making the phosphorus cycle overall one of the slowest bio geochemical cycles. Unlike many other bio geochemical cycles, the atmosphere does not play a significant role in the movement of phosphorus, because phosphorus and phosphorus-based compounds are usually solids at the typical ranges of temperature and pressure found on Earth. Phosphorus is essential for production of nucleotides, ATP, fats in cell membranes, bones, teeth, and shells. it is found in sedimentary rocks. It Does not depend on bacteria. •Steps in the phosphorus cycle 1.It is released from rocks thru weathering, and then infiltrates soil and water. 2. It is then absorbed by plants. 3. animals consume the plants, in turn consumed by other animals. 4. Then animals die, and return to soils/oceans thru decay. Phosphorus is released by the weathering of rocks into the soil and water. Step 1: The release of Phosphorus into soil and water. After the phosphorus seeps into the soil and runs off into the water it is then absorbed by plants. It is either absorb by plants directly through the soil itself or by watering it with water that has the phosphorus in it. Step 2. The phosphorus is absorbed by plants. Animals consume the phosphorus by eating plants that have absorbed it. Step 3: Animals consume it. When the animals use the bathroom they are putting the phosphorus back in the soil/ocean. Also when they die the phosphorus is absorbed by the soil/ocean when the body decays. Step 4: Animals die/Animals produce waste. Organic and inorganic reservoirs:

Lakes, Oceans, Soil, and Sedimentary rock.

Specific examples:
Organic: The Guano hills before the coast of Peru that developed through the accumulation of bird poo.
Inorganic: Phosphate in the form of apatite. Inorganic and organic reservoirs Phosphate (PO4–3) is released into the ecosystem as the result of weathering and erosion.

Phosphorus is changed into deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Adenosine phosphate (ATP), one of the nucleotides that make up DNA and RNA, is also the main energy transfer molecule in the multitude of chemical reactions taking place within organisms. Chemical reactions We take away large amounts of phosphate and use it in fertilizers.
We reduce the amount of phosphorus in tropical soils by clearing away forests.
Eutrophication, which is the natural process by which lakes, rivers. streams, etc. receive excess nutrients that cause excessive plant growth, can occur due to the runoff of excess phosphate from fields and such. Human Impact
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