Fill In the Blanks
The ____ of these elements is critical to maintaining life on Earth. The carbon cycle, the nitrogen and water cycle all have important ____ phases. The ____ cycle lacks a true ____ phase, and is slow and depends on the water cycle, also called the _____ cycle.
lipids
elements
hydrologic
atmospheric
carbohydrates
gravitational
atmospheric
phosphorus
cycling
biogeochemical
nitrogen