Botany - Ecosystem Question with Solution | TestHub

The reservoir for gaseous type of nutrient cycle (e.g., nitrogen, carbon cycle) exists in the atmosphere and for the sedimentary cycle (e.g., sulphur and phosphorus cycle), the reservoir is located in Earth's crust. 71% of carbon is found dissolved in oceans. The natural reservoir of phosphorus is rock, which contains phosphorus in the form of phosphates. Unlike the carbon cycle, there is no respiratory release of phosphorus into the atmosphere. Atmospheric inputs of phosphorus through rainfall are much smaller than carbon input.