LIFE SCIENCE

Detailed explanation-1: -Unlike carbon or nitrogen, however, phosphorus moves only through the lithosphere, biosphere, and hydrosphere. It is one of the only biogeochemical cycles that does not involve a gaseous stage, meaning that it does not become part of Earth’s atmosphere in any significant way.

Detailed explanation-2: -Since phosphorus and phosphorus-containing compounds are present only on land, atmosphere plays no significant role in the phosphorus cycle.

Detailed explanation-3: -Phosphorus enters the atmosphere from volcanic aerosols. As this aerosol precipitates to earth, it enters terrestrial food webs. Some of the phosphorus from terrestrial food webs dissolves in streams and lakes, and the remainder enters the soil.

Detailed explanation-4: -The phosphorus cycle comprises only movement from land to the hydrosphere, to plants and animals, and back to the land and hydrosphere. The primary source of phosphorus is phosphate rock, which is not very soluble.