Phosphorus is difficult for plants and animals to access in nature because most of the element in the environment is stored in reservoirs. The correct option would be C.
- The phosphorus cycle is the only cycle of important nutrient that does not have a gas phase.
- Phosphorus exists mainly as phosphates in sedimentary rocks
- The phosphate compounds only get into soil and water through a slow weathering process.
Due to the slow weathering process, phosphorus is one of the most scarce nutrients in nature. Thus, it is often termed limiting nutrient.
More on the phosphorus cycle can be found here: https://brainly.com/question/15020567?
