science review crossword

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Across
  1. 6. a plain in the ocean
  2. 7. gets darker and heavier the more you go in
  3. 8. liquid on the surface
  4. 10. provides energy for the water cycle
Down
  1. 1. water underground
  2. 2. you cant drink it
  3. 3. water coming back down on earth
  4. 4. needs to be cleaned
  5. 5. the cycle of hydration
  6. 9. liquid forming clouds