Biogeochemical Cycles

 Meaning of biogeochemical cycles

Biogeochemical cycles are the natural pathways through which essential chemical elements and compounds circulate between living organisms and the non-living environment, including the atmosphere, hydrosphere and lithosphere.

Major cycles include:

• Water cycle

• Carbon cycle

• Nitrogen cycle

• Phosphorus cycle

• Sulphur cycle

• Oxygen cycle

These cycles maintain nutrient availability and support ecosystem functioning.