AP BIOLOGY

Detailed explanation-1: -A biogeochemical cycle (or more generally a cycle of matter) is the pathway by which a chemical substance cycles (is turned over or moves through) the biotic and the abiotic compartments of Earth. The biotic compartment is the biosphere and the abiotic compartments are the atmosphere, hydrosphere and lithosphere.

Detailed explanation-2: -The biogeochemical cycle involves external transfers of elements among different components of a forest system. Uptake of nutrients from the soil and return of these nutrients in leaf fall, branch shedding, root growth and death, or through tree mortality is a major component of the biogeochemical nutrient cycle.

Detailed explanation-3: -Some examples of the biogeochemical cycles are the phosphorus cycle, oxygen cycle, carbon cycle and nitrogen cycle. Human activities have different impacts on the various biogeochemical cycles.