Biogeochemical cycles refer to the flow of chemical elements and compounds between living organisms and the physical environment.
It is defined as a constant interaction between the biotic and abiotic components of the biosphere in terms of matter and energy so as to maintain a balance in the environment.
This is possible due to biological, physical and chemical activities in our surrounding.
Chemicals absorbed or ingested by organisms are passed through the food chain and returned to the soil, air, and water by mechanisms like respiration, excretion, and decomposition.
