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.
Along with the nitrogen cycle and the water cycle, the carbon cycle comprises a sequence of events that are key to make the Earth capable of sustaining life; it describes the movement of carbon as it is recycled and reused throughout the biosphere, including carbon sinks.