Phosphorus is an important element for all forms of life. For gaseous cycles, the main source chemicals are atmosphere and oceans for example carbon cycle, nitrogen cycle. In the sedimentary cycle made the sources are the soil and the rocks, for example, sulphur cycle and phosphorus cycle. The phosphorus cycle is slow compared to other biogeochemical cycles such as the water, carbon, and nitrogen cycles. Volcanic ash, aerosols, and mineral dust can also be significant phosphate sources, though phosphorus has no real gas phase, unlike other elements such as carbon, nitrogen, and sulfur.Phosphate compounds in the soil can be taken up by plants and, from there, transferred to animals that eat the plants. When plants and animals excrete wastes or die, phosphates may be taken up by detritivores or returned to the soil.