environmental science 09

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Across
  1. 3. say or estimate a thing that will happen in the future
  2. 7. a height above a given level, especially sea level
  3. 9. the amount of space a substance takes up
  4. 13. Relating to water; living in or near water
  5. 14. of, on, or relating to the earth
  6. 15. a process that turns a liquid into a solid
Down
  1. 1. Relating to water
  2. 2. a visual representation of how quantities relate to each other
  3. 4. a procedure used to test a hypothesis
  4. 5. a well substantiated explanation of some aspect of the natural world
  5. 6. the amount of matter in an object
  6. 8. the central or typical value in a data set
  7. 10. a statement that describes what happens, not why it happens
  8. 11. a process that causes a substance to change from a solid to a liquid
  9. 12. a high degree of certainty in a theory or proposition