How does the collection and use of fresh and fossilized guano affect the phosphorus cycle and ecosystems.

Other deposits may be from fossilized bone or bird droppings called guano. Weathering and erosion of rocks gradually releases phosphorus as phosphate ions which are soluble in water. Much of the phosphate eventually is washed into the water from erosion and leaching.

Explanation:

answer; ///i believe that the correct answer is (a) specialized cells)