Unlike other biogeochemical cycles, the phosphorus cycle moves only through the lithosphere, biosphere, and the hydrosphere. it is the only biogeochemical cycle that does not involve a gaseous state, meaning the atmosphere is not necessary. there are several reservoirs for the phosphorus cycle, what is the largest reservoir for phosphorus?

                                                             sedimentary rock

Explanation:

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.