Water

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Across
  1. 1. basin The portion of land drained by a river and its tributaries
  2. 3. the chemical element of atomic number 15
  3. 5. A measure of the warmth or coldness of an object or substance
  4. 6. Water that is safe to drink or to use for food preparation
  5. 8. A measure of the condition of water relative to the requirements of one or more biotic species and or to any human need or purpose
  6. 9. An organism whose status in an ecosystem is analyzed as an indication of the ecosystem's health
  7. 18. the rigid outer part of the earth
  8. 19. Stress on the environment caused by natural activities
  9. 21. A measure of how acidic/basic water is
  10. 24. An area of the ocean floor where hydrogen sulfide, methane and other hydrocarbon-rich fluid seepage occurs
  11. 27. An opening in the sea floor out of which heated mineral-rich water flows
  12. 30. A salt or ester of nitrite acid
  13. 31. The tidal mouth of a large river, where the tide meets the stream
  14. 32. The amount of heat required to convert a liquid into a gas at constant temperature and pressure
  15. 33. The property of the surface of a liquid that allows it to resist an external force
  16. 36. The activity or practice of touring
  17. 37. The molecular force between particles within a body or substance that acts to unite them
  18. 38. A rising of seawater, magma, or other liquid
  19. 39. The net result of the overall negative charge of the oxygen atom and the overall positive charges of the two hydrogen atoms
Down
  1. 2. An irregularly occurring and complex series of climatic changes affecting the equatorial Pacific region and beyond every few years
  2. 4. The state or quality of a material or membrane that causes it to allow liquids or gases to pass through it
  3. 7. The cycle of processes by which water circulates between the earth's oceans, atmosphere, and land
  4. 10. The amount of oxygen that is present in the water
  5. 11. Pressure on the environment caused by human activities
  6. 12. The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
  7. 13. The amount of heat one gram of a substance must absorb or lose to change its temperature by one degree Celsius
  8. 14. A substance that dissolves most chemicals
  9. 15. A continuous, directed movement of seawater generated by forces acting upon this mean flow, such as breaking waves, wind, the Coriolis effect, cabbing, temperature and salinity differences
  10. 16. Materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used for economic gain
  11. 17. all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds
  12. 20. The regions of the surface, atmosphere, and hydrosphere of the earth occupied by living organisms
  13. 22. The degree of compactness of a substance
  14. 23. The saltiness or dissolved salt content of a body of water
  15. 25. A system of interlocking and interdependent food chains
  16. 26. The cloudiness or haziness of a fluid caused by large numbers of individual particles
  17. 28. The molecular force of attraction in the area of contact between unlike bodies that acts to hold them together
  18. 29. A series of organisms each dependent on the next for food
  19. 34. A river or stream flowing into a larger river or lake
  20. 35. The envelope of gases surrounding the earth