Curated OER
Biogeochemical Cycles Study Guide
The four cycles in Earth's biogeochemical system are covered in this instructional activity. Science stars fill in the blanks or define vocabulary terms pertaining to the hydrologic, carbon, nitrogen, and phosphorous cycles. This...
Curated OER
The Biogeochemical Cycles
The majority of this presentation is a collection of diagrams and graphs that back your lecture on biogeochemical cycles. The last few slides define ecosystems and the Gaia hypothesis. You may find these slides valuable, but will...
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
Alken Murray: The Phosphorous Cycle
A diagram which clearly illustrates the phosphorous cycle in a somewhat technical manner.
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.
Curated OER
Phosphorous Cycle Diagram
A diagram which clearly illustrates the phosphorous cycle in a somewhat technical manner.