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Today I learned that "weathering, erosion, and decomposition" are all releasing agents.

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Gosh, I had no idea sedimentary rock played such a big role in all of these cycles...

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Many people mine phosphorus to use in fertilizers for plants. This helps the plants grow, but when it rains unnatural amounts of phosphorus are carried through runoff to different locations. Often this leads to eutrophication, which further harms marine life.

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Eutrophication is when a body of water acquires too many nutrients, causing a rapid algae bloom, which then depletes the oxygen of the water. An increase of phosphorus is often one of the contributing factors to eutrophication, which hurts the pre-existing life in an area because sometimes the algae release harmful toxins and lower the dissolved oxygen levels of the water.

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Sometimes sediments from weathering and runoff in the ocean form sedimentary rock. When the sedimentary rock is moved to land, it is called geologic uplift. This can also occur on land when mountains form over time (pushing rock from deep within the earth up to the surface, leaving it vulnerable to weathering).

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Sedimentary rock is the largest reservoir of phosphorus.

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Soil/Rocks→Weathering →Runoff→Plants→Animals→Decomposition →Soil/Rocks

Soil/Rocks→Weathering →Runoff→Plants→Animals→Decomposition →Soil/Rocks

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Weathering, erosion, and decomposition of plants and animals (death).

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Runoff of sediments containing phosphorus and weathering that moves phosphorus around the lithosphere, hydrosphere, and biosphere.

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Rocks/soil, living plants and animals, as well as systems of water.

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From here there are two possibilities:

1. The plant dies, decomposes, and phosphorus is returned to the rock/soil

2. An animal consumes the plant, it absorbs the phosphorus, and when the animal dies and decomposes, it returns to the rock/soil.

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The main components of the phosphorus cycle are as follows:          • Weathering (rocks containing phosphorus).                                            • Runoff moves water to plants, oceans, or to other rock.                                      • Plants absorb the phosphorus through nutrients in the soil.

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The main components of the phosphorus cycle are as follows:          • Weathering (rocks containing phosphorus).                                            • Runoff moves water to plants, oceans, or to other rock.                                      • Plants absorb the phosphorus through nutrients in the soil.

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The phosphorus differs from better-known cycles such as the carbon or water cycle because it does not cycle into the atmosphere, however it does in the lithosphere, biosphere, and hydrosphere.