The phosphorus cycle does not include the atmosphere.Complete answer:
The cycle of phosphorus varies from the other major biogeochemical cycles in that it may not contain a gas phase; while small quantities of phosphoric acid ($H_3PO_4$) that reach the atmosphere, leading to acid rain in some instances.
The cycles of water, carbon, nitrogen, and sulphur all have at least one step in which the element is in its gaseous state. Too little phosphorus circulates in the atmosphere since phosphorus and its various derivatives are not gases at Earth's natural temperatures and pressures. The highest phosphorus source is in sedimentary soil.So, the Option is (C) is correctNote:
Human beings can change the phosphorus cycle in many ways, including destroying tropical rainforests and using farm fertilizers.
Rainforest habitats are maintained mostly by nutrient recovery, with few to no stocks of nutrients in their soils.
When the vegetation is cut and/or burnt, nutrients that were previously contained in plants and rocks are washed away easily by heavy rainfall, allowing unproductive land to grow.
Fig3. Nitrogen Cycle