Physical and chemical weathering

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Across
  1. 4. acid in water
  2. 5. rocks breaking into smaller pieces
  3. 7. digging
  4. 9. rusting
  5. 10. rain
  6. 11. breaking down
Down
  1. 1. carbonic acid
  2. 2. frost
  3. 3. changes color of rocks
  4. 6. roots of a plant
  5. 8. lichen/moss
  6. 10. exfoliation/rock peeling