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4 Written questions

3 Multiple choice questions

  1. the amount of salt in water
  2. pellets of ice that form when rain freezes as it falls
  3. process of water vapor in clouds returning to Earth as rain, snow, sleet or hail

3 True/False questions

  1. aquifersunderground layers of sand, gravel, and rock that contain water


  2. sublimationthe removal of salt (especially from sea water)


  3. desalinationprocess of ice changing directly into water vapor without first becoming a liquid


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