Earth's Water

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Across
  1. 4. A large, flowing body of water is called a
  2. 9. To dirty or pollute is to
  3. 10. A large body of salt water is called a(n)
  4. 11. Layers of rock or soil that allow water to flow through are called...
  5. 12. A barrier built across a river is a
Down
  1. 1. Water from a flowing river may build up behind a dam to form a(n)
  2. 2. What do we call the area of land that drains into a specific river?
  3. 3. Water that falls from the air to the ground as rain, snow, or sleet is
  4. 5. A sheet of ice that moves slowly over land is a(n)
  5. 6. When water vapor changes to liquid water, it
  6. 7. A medium-sized body of fresh water surrounded by land is a(n)
  7. 8. Water that travels across land my pick up substances and become