Determine how water, carbon, nitrogen, and oxygen cycle between abiotic resources and organic matter in the ecosystem. To do this you need to illustrate the following biogeochemical cycles:

  1. Water Cycle
  2. Carbon Cycle
  3. Nitrogen Cycle
  4. Phosphorus Cycle

Please use a different biome for each cycle. In other words, if you used a "grassland biome" for illustrating the water cycle, then you must use a "rainforest biome," "temperate forest biome," "coniferous forest biome," "tundra biome," "tropical savannah," or "desert biome" for illustrating each of the other three cycles. Please use a separate sheet of unlined paper to illustrate each cycle. Use the front side to illustrate the cycle and the back side to write a paragraph explaining the cycle. You do not have to use color, but it does add to the appeal of your work. You will be evaluated on the following points:

  1. Do you have all necessary labels for the components of each cycle?
  2. Is each biogeochemical cycle represented in a different terrestrial biome?
  3. Are the words clear, neat, and correctly spelled?
  4. Do you use appropriate biotic representatives from the biome?
  5. Are your organisms drawn at a level appropriate for high school? (proportions correct and care taken to make it look like the species)
  6. Are the lines showing cycling of materials and labels bold, clear, and neatly drawn?
  7. Please write a concise paragraph of explanation for each cycle that explains each component of the cycle in your words. Does you paragraph adequately explain how the cycle works? Take the reader through one complete "turn" of the cycle.

Hint: Use a wide variety of books and resources to see find the best biogeochemical cycle diagrams. You may also use the Internet. Cutting out the pictures (from computer print outs or magazines) of animals in your biome may be easier than drawing them.