| In the phosphorus cycle, phosphorus passes quickly through food webs as it moves from land to ocean sediments, then slowly back to dry land. |
| The main source of phosphorus is the geosphere and the phosphorus cycle begins when phosphorus compounds are leached from rocks and minerals over long periods of time. |
| Most of the processes involved in the phosphorus cycle are the geologic processes of erosion and deposition. |
| The phosphorus cycle is different from the water, carbon, and nitrogen cycles because phosphorus is found in sedimentary rock, not in the atmosphere. |
| There are no common stable gaseous forms of phosphorus, so the phosphorus cycle is endogenic without an atmospheric component. |
| A closure of the anthropogenic phosphorus cycle may help to avoid eutrophication, hypoxia, and other negative impacts on ecosystems and promotes resources conservation. |
