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.
A: The Carbon Dioxide-Oxygen Cycle is a continuously occurring process whereby animals inhale Oxygen and then exhale Carbon Dioxide, and plants use the CO2 and exhale O2.A: Plants and other producers use carbon dioxide in photosynthesis. They produce oxygen as a waste product.: The Carbon Dioxide-Oxygen Cycle is a continuously occurring process whereby animals inhale Oxygen and then exhale Carbon Dioxide, and plants use the CO2 and exhale O2.