water

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Across
  1. 4. a meandering river located at a low elevation
  2. 6. the change of a substance from a solid to a gas without passing through the liquid state
  3. 10. an area that has been depleted of oxygen by eutrophication
  4. 12. the electricity produced from the power of moving water
  5. 14. an explosive growth of algae caused by too many nutrients in the water
  6. 15. the force that pulls molecules on the surface of a liquid together to form a layer
  7. 17. a hot spring that periodically erupts
  8. 18. the process by which nitrate or phosphate compounds overenrich a body of water and deplete it of oxygen
  9. 19. a river with an increased stream gradient and power to erode
  10. 21. a ridge or other elevated region that separates watersheds
  11. 22. a measure of the open space in rocks
  12. 23. the change of a substance from a liquid to a gas
  13. 24. a hole in the ground that forms when an underground cave collapses
  14. 26. a stream or river that flows into a larger stream or river
  15. 28. the force of attraction between different molecules
  16. 29. a structure build to prevent a river from overflowing
Down
  1. 1. a fast-flowing, irregular river with a steep, V-shaped channel
  2. 2. the molecular attraction between particles of the same kind
  3. 3. the loss of water by plants
  4. 5. the change of a substance from a gas to a liquid
  5. 7. the boundary between unsaturated and saturated ground
  6. 8. an area of land that drains into a particular river system
  7. 9. the relationship between the input and the output of all the water on Earth
  8. 11. the underground region where pore spaces are saturated with groundwater
  9. 13. the underground region where pore spaces contain air and water
  10. 16. all the water found underground
  11. 20. a natural or artificial lake used to store and regulate water
  12. 25. a slow-moving, flat river
  13. 27. a permeable underground layer of rock