Answer :
The component of the ecosystem that acts as long-term storage of phosphorus is sedimentary rocks.
Phosphorus cycle
Phosphorus is one of the important nutrient elements for living organisms. Thus, its biogeochemical cycling is essential to the earth's ecosystem.
The cycling of important nutrient elements is usually between the biotic and abiotic components of the ecosystem. As far as phosphorus is concerned, the component of the ecosystem that acts as the long-term reservoir is the sedimentary rocks.
Through weathering, phosphorus becomes available to plants in the soil. Animals obtain their own phosphorus by consuming plants. When living organisms die, their phosphorus contents return back to the soil.
Phosphorus can be lost in the soil through erosion into rivers. Thus, the floor of water bodies represents another reservoir of phosphorus.
More on the phosphorus cycle can be found here: https://brainly.com/question/15020567
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