Draw the phosphorus cycle

Explanation

It is cycle movement of phosphorous as a nutrient between the environment and living organisms . It is sedimentary cycle . Its main reservoirs In nature are phosphate rocks, fossil bone deposits and gunano deposits (hardened excerta of marine birds) from them , by weathering and volcanic eruptions . Phosphorous is released as inorganic phosphates into the soil and water . Much of these phosphates get washed into sea where the are lost into deeper sedimentation.
Only some phosphates of soil and water are absorbed through roots by green plants (producers and are used to from the important components of protoplasm , cell membrane , ATP and nucleic acids . These are obtained by animals (consumers) as they feed on producers directly (herbivores)are indirectly (carnivores) through food chains. In animals phosporous is essentail for teeth and bone formation . Bacterial decomposition of dead bodies of produces and consumers return tge phosphorous as phosphates to the cycle to be recycled through organisms, Since much of the soil phosphates are lost to sedimentation leaving only some to be cycled through the organisms, phosphorous cycle is a good example for imperfect bio- geo chemical cycle.
- Forest stage : It is the climax stage during course of time, in which the soil becomes rich in humus and organic matter and supports climax community . it may be tropical deciduous or monsoon or monsoon forests in regions of moderate rainfall , tropical rain forests in areas with heavy rainfall and mixed forests or Quercus (oak), Acer and Alnus in temperate regions