Describe this mutualistic relationship, including describing the benefits to each mutualists. Name the compound or give the simple chemical formula. Name the compound or give the formula. Only small amounts of nitrogen are drawn from the atmosphere by nitrogen fixation, but over a long period of time, these small amounts accumulate in ammonium, the form of nitrogen that is the main source of the nitrogen that keeps recycling through ecosystems. Add to Fig.
Bacteria are very important in the nitrogen cycle.
Draw a simplified nitrogen cycle that names and shows the four different types of bacteria involved, and the nitrogenous compounds that they take in for use, and the nitrogenous compounds that they produce. People add nitrogen and phosphorous into lake systems from what two main sources that you should know. We talked in lecture about one, fertilizers. Define and describe the process. Explain why the problem is greatest in this season.