[Solved] In case of which one of the following biogeochemical cycles,the weathering of rocks is the main source of release of nutrient to entire the cycle ?

Q27. In case of which one of the following biogeochemical cycles,the weathering of rocks is the main source of release of nutrient to entire the cycle ?

  A. Carbon cycle

B. Nitrogen cycle

C. Phosphorus

D. Sulphur cycle

Answer: C

Explanation:

· Gaseous cycles include those of nitrogen, oxygen, carbon, and water;

· Sedimentary cycles include those of iron, calcium, phosphorus, and other more earthbound elements.

· Much of the phosphorus on Earth is tied up in rock and sedimentary deposits, from which it is released by weathering, leaching, and mining.

· Phosphorus moves in a cycle through rocks, water, soil and sediments and organisms.

· Over time, rain and weathering cause rocks to release phosphate ions and other minerals.

· This inorganic phosphate is then distributed in soils and water.