BIOGEOCHEMICAL PUZZLE

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Across
  1. 3. A cycle that shows the continuous movement of water within the Earth and atmosphere
  2. 4. a clean alternative to methane, also known as natural gas
  3. 6. any body of water found on Earth's surface
  4. 8. a non-metal that sits just below nitrogen in group 15 of the periodic table
  5. 13. the evaporation of water from a plant's leaves, stem, or flowers
  6. 15. the process of combining, mixing, or filling with nitrogen or one of its compounds
  7. 16. colourless, odourless,tasteless gas
  8. 17. a chemical element with an atomic number of 8
Down
  1. 1. the loss or removal of nitrogen or nitrogen compounds
  2. 2. describes how carbon moves between the atmosphere, soils, living creatures, the ocean, and human sources.
  3. 5. conversion of a substance from the solid to the gaseous state without its becoming liquid.
  4. 7. water that exists underground
  5. 9. when a liquid turns into a gas
  6. 10. the process where water vapor becomes liquid
  7. 11. an element that takes the solid form of either graphite or diamond
  8. 12. the biogeochemical cycle by which nitrogen is converted into multiple chemical forms
  9. 14. any liquid or frozen water that forms in the atmosphere and falls back to the earth