In case of which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrient to enter the cycle?
[amp_mcq option1=”Carbon cycle” option2=”Nitrogen cycle” option3=”Phosphorus cycle” option4=”Sulphur cycle” correct=”option3″]
This question was previously asked in
UPSC IAS – 2021
Option C is the correct answer. In the phosphorus cycle, the main reservoir of phosphorus is in rocks and minerals. Weathering of these rocks releases phosphorus into the soil and water.
The phosphorus cycle is unique among major biogeochemical cycles in that it does not have a significant atmospheric gaseous phase. The primary source of phosphorus for ecosystems is the slow weathering of phosphate-bearing rocks.