the phosphorus cycle

Updated: 6/21/2020
the phosphorus cycle

Storyboard Text

  • how about we go on a mini virtual trip and learn and see how this cycle works
  • The phosphorus cycle is the biogeochemical cycle that describes the movement of phosphorus through the lithosphere, hydrosphere, and biosphere.
  • sir, what is the Phosphorus Cycle?
  • the six steps of Phosphorus Cycle are weathering, Fertilizer, Excretion and Decomposition, Dissolved Phosphates, Geologic Uplift
  • can you remind me what is the first step of the phosphorus cycle and explain
  • the first step is weathering. weathering of uplifted rocks contributes phosphates to the land. Some phosphates make their way back to the ocean
  • what is the second step of the phosphorus cycle and explain
  • phosphate fertilizer applied to fields can run off directly into streams, become part of a soil pool, or be absorbed by plants
  • the second step of the phosphorus cycle is fertilizer
  • okay Sasha, what's the third step of the cycle?
  • it is the excretion by animals and decomposition of both animals and plants release phosphates on land or in water
  • can you explain the process?
  • oh easy, excretion and decomposition.
  • alright now someone say the second last step of the cycle with a brief explanation
  • Dissolved phosphates is the precipitate out of solution and contribute to the ocean sediments. Conversion of sediments into phosphate rocks is a very slow process
  • the second last step is Dissolved Phosphates
  • Geologic forces can slowly lift up phosphate rocks from the ocean floor (the rocks thick with phosphate in them) to form mountains
  • we are now in the final step of the cycle. who would like to end of the trip with saying the last step of the cycle
  • i'd like to answer!the final step is Geologic Uplift