Water Conservation Activities and Resources for Students: This resource from the Arizona Department of Water Resources links to fact sheets, crossword puzzles, games, coloring books, activities, and booklets teachers and parents can use to spark an interest in water conservation.
o The Nitrogen Cycle: Defined. The nitrogen cycle is defined as the pathways for which nitrogen is recycled. As with all elements, nitrogen is constantly combined and uncombined with other elements to form essential and nonessential compounds for life.
The global biogeochemical cycle of nitrous oxide. The major processes and fluxes involve transfer of nitrogen as nitrous oxide between the atmosphere and the surface of the Earth. Fluxes are millions of tons of nitrogen (MTN) per year, and the reservoir size of nitrous oxide is in millions of tons of nitrogen.