Encyclopedia of Earth
Encyclopedia of Earth: Biogeochemistry: Phosphorus Cycle
Article explaining what the phosphorus cycle is, where it occurs, its place in the biotic world, and the environmental impact of human activities on the phosphorus cycle. (Published: October 8, 2009)
Encyclopedia of Earth
Encyclopedia of Earth: Phosphorus
Information about the element, Phosphorus, atomic number 15. Covers physical and atomic properties, the phosphorus cycle, phosphorus chemistry, and how exposure to white phosphorus affects human health.