Biogeochemical cycles recycle water and natural elements throughout the biosphere to ensure that organisms do not run out of these substances. A diagram of the Carbon Cycle. A diagram of an aquatic biome. Arrows point from one step to the next. Food to Fish to Ammonium N H (subscript 4 baseline superscript + baseline). Ammonium to Nitrates (N O subscript 2 baseline superscript minus baseline) (Nitrosomonas) and growing plant. Plant to decomposing plant and animal matter. Nitrates to Nitrates (Nitrospira) (N O subscript 3 baseline superscript minus baseline) to plant and Water change. Diagram by NASA/Kevin Saff Diagram by Ilmari Karonen Which of the following processes plays an important role in cycling carbon, nitrogen, and phosphorus? photosynthesis transpiration decomposition respiration