Phosphorus cycles through water, soil, sediments and the atmosphere. It is released from sedimentary rocks through weathering and enters soils and water, where it is taken up by plants and moves up the food chain as animals eat plants or other animals. Phosphorus returns to soils through the decomposition of animal and plant wastes.

1. Prepared by: Group 2 Abenojar, Cabeguin, Domingo, Pagulayan, Yu II- Sampaguita

3. This biogeochemical cycle shows the movement of phosphorus through the atmosphere. Phosphorus mainly cycles through water, soil and sediments. It can be found in the atmosphere as very small dust particles.

4. phosphate in oceanic sediments uplifting over time sedimentary rocks rain falls (via weathering) phosphates separate from rocks phosphates distributed to soil and water plants take up phosphate ions animals eat the plants phosphates absorbed by animal tissue returns to soil through excretion of wastes and decomposition of decaying animals

5. 1. weathering of the rocks 2. phosphates in soil 3. plants 4. herbivores & carnivores 5. phosphorus as waste product

7. http://www.enviroliteracy.org/article.php/480.html http://filebox.vt.edu/users/chagedor/biol_4684/Cycles/Pcycle.html http://www.lenntech.com/phosphorus-cycle.htm