Biology

The correct answer is: C.Phosphorus cycle.

The phosphorus cycle is known as the "sedimentary" cycle because its primary reservoir is sedimentary rock, where phosphorus is stored in the form of phosphate minerals. Unlike nitrogen and carbon, which have significant gaseous components (e.g., nitrogen in the atmosphere and carbon in the atmosphere and oceans), phosphorus does not have a gaseous phase and is mostly cycled through soil, water, and rocks.

In the phosphorus cycle, phosphorus is released from rocks through weathering, enters ecosystems, and is th...