Which Is Not A Major Biogeochemical Cycle?

Which Is Not A Major Biogeochemical Cycle? 1 Answer. The phosphorus cycle does not have an atmospheric component. What are the 4 biogeochemical cycles? Some of the major biogeochemical cycles are as follows: (1) Water Cycle or Hydrologic Cycle (2) Carbon-Cycle (3) Nitrogen Cycle (4) Oxygen Cycle. The producers of an ecosystem take up several