Question

The phosphorus cycle differs from the biogeochemical cycles in that
it does not have an atmospheric reservoir.
it does not have an oceanic reservoir.
there is no assimilation of phosphorus.
there is no decomposition of phosphorus.

Answer 1

It does not have an atmospheric reservoir.

Explanation: Phosphorus cycles mainly between rocks, soils, water, and living organisms as phosphate (PO4^3−). There is no significant gaseous phase like in the carbon or nitrogen cycles. Phosphorus is assimilated by organisms and released by decomposition, and long-term cycling involves weathering of rocks and sedimentation in oceans.