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The Phosphorus Cycle

by Lilly Inglis

How Phosphorus extracted from rocks

How Phosphorus is removed from rocks

Erosion is responsible for moving phosphorus from rocks into soil. Over long periods of time rocks that have sat exposed to the elements such as rain and wind start to erode.

Phosphorus in the ocean

Sedimentation to Rock

When compounds containing phosphorus are carried into the water they are then taken up by aquatic organisms, when those organisms die they settle on the ocean floor and form layers of sedimentary rock. This process means that phosphorus takes around 20,000 to 100,000 years in the ocean (Khan Academy, 2016)

From Soil to Plants

Phosphorus compounds in the soil get transferred into plants, but when plants and animals (that ate plants) die they get returned back to the soil where detritivores may take up phosphorus or it travels into waterways via surface runoff. (ClearIAS Team, 2021)

Soil to plants

Animals that eat plants

Phosphate in plants gets transferred to animals that consume plants and from there the food chain ensures that phosphorus gets passed on. When these animals excrete waste and die the phosphorus returns to soil.

(ClearIAS Team, 2021)

Plants to Consumers

How does phosphorus make it into waterways

Phosphorus attaches to soil particles and from there gets carried into waterways via runoff (Water Science School, 2018).

Animals to our waterways

Bibloioraphy

Bibliography

The phosphorus cycle (2017) YouTube. YouTube. Available at: https://www.youtube.com/watch?v=ARWH3wGGnMo&ab_channel=SteveGriffiths (Accessed: March 23, 2023).

The phosphorus cycle (article) | ecology (2016) Khan Academy. Khan Academy. Available at: https://www.khanacademy.org/science/biology/ecology/biogeochemical-cycles/a/the-phosphorous-cycle (Accessed: March 23, 2023).

Team, C.I.A.S. (2021) Phosphorus cycle, ClearIAS. Available at: https://www.clearias.com/phosphorus-cycle/#:~:text=The%20main%20storage%20for%20phosphorus%20is%20in%20the,up%20by%20detritivores%20or%20returned%20to%20the%20soil. (Accessed: March 23, 2023).

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