| Animation of Nitrogen Cycle [ Teens/Mature Teens ] - Presents an active diagram of this process, together with a description of each stage and component. http://www.sp.uconn.edu/~terry/229sp03/lectures/Ncycleanim.html |
| Nitrogen Cycle [ Teens ] - A diagram and overview. http://www.elmhurst.edu/~chm/onlcourse/chm110/outlines/nitrogencycle.html |
| Nitrogen Cycle [ Kids/Teens/Mature Teens ] - Diagram, facts, nitrogen fixation methods, and what fixes nitrogen. http://homepages.nyu.edu/~pet205/nitrogen.html |
| Nitrogen Cycle [ Teens/Mature Teens ] - An interactive diagram: you click on an aspect of the cycle or a state of nitrogen and the diagram will simplify to show you which part of the cycle it applies to. http://www.neuse.ncsu.edu/nitrogen/ |
| Nutrient Overload: Unbalancing the Global Nitrogen Cycle [ Teens/Mature Teens ] - Shows how nutrient pollution through man can lead to algae blooms that unbalance the cycle. http://pubs.wri.org/pubs_content_text.cfm?ContentID=1412 |
| Streams Reduce Nitrogen Pollution, Scientists Find [ Teens/Mature Teens ] - Article describing the finding of scientists that small streams are extremely efficient at removing some of the excess nitrogen that is flowing into waterways, endangering fish and other forms of aquatic life. http://news.nationalgeographic.com/news/2001/05/0504_smallstreams.html |
| The Microbial World: The Nitrogen Cycle and Nitrogen Fixation [ Teens/Mature Teens ] - How nitrogen gets 'fixed' by bacteria to become available for plants on earth. http://helios.bto.ed.ac.uk/bto/microbes/nitrogen.htm |
| The Nitrogen Cycle [ Teens/Mature Teens ] - An explanation of the different forms of nitrogen on earth, nitrogen fixation, decay, and nitrification. http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/N/NitrogenCycle.html |
| The Nitrogen Cycle [ Teens ] - Learn about the nitrogen cycle, and how humans have made an impact on it. Includes a quiz. http://library.thinkquest.org/11353/nitrogen.htm |
| The Nitrogen Cycle [ Teens ] - Diagram and explanation of the cycle. http://www.physicalgeography.net/fundamentals/9s.html |