The biological significance of the phosphorus cycle lies in its role in providing essential nutrients for living organisms. Phosphorus is a critical component of DNA, RNA, and ATP, which are vital for energy transfer and genetic information. The cycle describes the movement of phosphorus through soil, water, and living organisms, highlighting its importance for plant growth and overall ecosystem productivity. Disruptions in the phosphorus cycle, often due to agricultural runoff and pollution, can lead to eutrophication and deteriorated water quality, impacting biodiversity.