Biogeochemical Cycle

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Across
  1. 2. Reservoir of Nitrogen
  2. 4. The process that converts nitrate into nitrogen gas.
  3. 7. ____________occurs when fertilizer runoff causes excess algae and water weeds
  4. 9. Cellular respiration and photosynthesis are components of the ______________ cycle.
  5. 12. ______________ play a critical role in biogeochemical cycles because they break down dead matter into raw elements.
  6. 13. Water, carbon, or nitrogen cycling from the physical environment to living things is known as a ______________ cycle.
  7. 14. Largest reservoir of Phosphorus in the biosphere.
Down
  1. 1. The process that convert most of carbon from one form to another
  2. 3. liming of soil to reduce acidity
  3. 5. Biogeochemical cycles are also known as _________ cycles.
  4. 6. Energy and nutrients enters a community by way of
  5. 8. Dissolved Ca minerals in water
  6. 10. The nitrogen cycle relies heavily on plants and ______________.
  7. 11. ______________ sedimentary cycle