Biogeochemical Cycles

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Across
  1. 2. transformation of water vapor into liquid water droplets, forming clouds
  2. 3. converting ammonia to nitrite then nitrate.
  3. 6. rock
  4. 7. Water that falls from clouds to the ground in forms such as rain, snow, sleet, or hail.
  5. 8. plants release water vapor into the air through their leaves
  6. 10. Cycles, Natural processes that recycle nutrients in various chemical forms from the environment to living organisms and back again.
  7. 11. air
  8. 13. living organisms
  9. 15. Fixation, process of converting atmospheric nitrogen into ammonia, which plants can use.
Down
  1. 1. process of water soaking into the ground from the surface
  2. 4. water
  3. 5. process by which bacteria convert nitrates back into nitrogen gas, releasing it into the atmosphere.
  4. 9. Cycle, series of processes by which nitrogen is converted and used by living organisms.
  5. 12. cycle, The continuous movement of water through the environment
  6. 14. movement of water through soil and rock layers.