crossword puzzle

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Across
  1. 3. What causes rocks to move
  2. 5. breaks things in halve
  3. 6. It cares sediments
  4. 7. causes rocks to crack in halve
  5. 8. how are sand dunes made
Down
  1. 1. shapes things into diffrent shapes
  2. 2. cares things down streams
  3. 4. what puts sediments together