Biogeochemical Cycle

4. The process that converts nitrate into nitrogen gas.
9. Cellular respiration and photosynthesis are components of the ______________ cycle.
11. ____________occurs when fertilizer runoff causes excess algae and water weeds
12. Water, carbon, or nitrogen cycling from the physical environment to living things is known as a ______________ cycle.
15. The process that convert most of carbon from one form to another

1. liming of soil to reduce acidity
2. Dissolved Ca minerals in water
3. Reservoir of Nitrogen
5. The nitrogen cycle relies heavily on plants and ______________.
6. 20-25__________used to make biomolecules (Nutrients)
7. ______________ play a critical role in biogeochemical cycles because they break down dead matter into raw elements.
8. Biogeochemical cycles are also known as _________ cycles.
10. Largest reservoir of Phosphorus in the biosphere.
13. ______________ sedimentary cycle
14. Energy and nutrients enters a community by way of