A black hole of stellar mass is created when a massive star, exceeding 20 solar masses, runs out of nuclear fuel in its core and collapses under gravitational pressure, leading to a supernova that ejects its outer layers.
Phosphorus cycles through living organisms and the SOIL.
Explanation:
Phosphorus circulates through rocks, water, soil, sediments, and living beings. The phosphorus cycle constitutes a biogeochemical cycle illustrating phosphorus activity within the lithosphere, hydrosphere, and biosphere. It is a vital element necessary for all forms of life. In its phosphate form (PO4), it contributes to the structural framework that stabilizes DNA and RNA.