In some cycles, there are reservoirs where a substance remains for an extended period of your time. Ecological systems (ecosystems) have many biogeochemical cycles operating as a neighborhood of the system, for instance, the water cycle, the carbon cycle, the organic process, etc. In
ecology and natural science, a biogeochemical cycle or substance turnover or cycling of
drugs may be a pathway by which a chemical substance moves through biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth. There are biogeochemical cycles for the chemical elements calcium, carbon, hydrogen, mercury, nitrogen, oxygen, phosphorus, selenium, and sulfur; molecular cycles for water and silica; macroscopic cycles like the rock cycle; also as human-induced cycles for synthetic compounds like polychlorinated biphenyl (PCB).
Relevant Topics in Medical Sciences
