I created this product out of necessity. I had an extremely old packet on Biogeochemical cycles (Nutrient Cycles, cycles of matter) that I could not use for my upcoming class and the new one I purchased turned out not to be quite what I was looking for, so.... If you are looking for a cohesive booklet where students label the water, carbon, nitrogen and phosphorus cycles, finish filling out the description/process of each cycle and answer review questions, then this resource is for you. I spent a lot of time making this a resource I want to use and I hope you enjoy it too. The booklet is 11 pages. It comes with a key and instructions for making the booklet. GREAT FOR INSERTING INTO INTERACTIVE NOTEBOOKS ALSO!