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)
Other
Lenntech: The Phosphorus Cycle
A concise explanation of the phosphorus cycle. Also contains a flow diagram which illustrates the flow of phosphate through the cycle.
Ducksters
Ducksters: Chemistry for Kids: Elements: Phosphorus
This site includes information about phosphorus's atomic weight, atom, uses, sources, name, and discovery. Plus properties and characteristics of phosphorus are discussed.
Precision Nutrition
Encyclopedia of Food: Phosphorus
Find out how humans can acquire phosphorus and why it is important to the body.
Society for Science and the Public
Science News for Students: Like Poison for Phosphorus
Discusses a research study undertaken at Mono Lake in California, known for its extreme salty conditions, which supports unusual life forms. Scientists found that a bacterium could survive using arsenic instead of phosphorus,...
Ohio State University
Ohio State University: Concepts of Plant Ecology
An advanced discussion of plant interactions and relationships. Energy flow, nutrient cycling and succession are discussed. Try the quiz to check your understanding.
Other
Marietta College: Ecosystems
Complete illustrated discussion of energy flow within ecosystems, including discussions of trophic levels, ecological pyramids, food chains and webs, biological magnification, and cycles.
Science Struck
Science Struck: Ground State vs. Excited State of an Atom
Explains what Bohr's model of the atom is, the characteristics of the ground and excited states of an atom, and the electron configuration for each in the example of Phosphorus.
University of Illinois
University of Illinois Extension: Energy and Ecosystems Use Some Lose Some
Life on Earth is possible because energy flows one way through ecosystems, while matter cycles endlessly. Water and elements, such as carbon, nitrogen, phosphorous, and sulfur are examples of matter that cycles through ecosystems.
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