BEN's crossword

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Across
  1. 4. Roots and trees enter cracks in rocks as the roots grow, the rock splits further and further
  2. 7. type of weathering that dissolves
  3. 8. full of tiny connected air spaces
  4. 10. grinding of rock by other rock particles carried in water,ice,or wind
  5. 11. the type of weathering in wich rock is physically broken into smaller pieces
  6. 12. The product of _________ is rust.
Down
  1. 1. animals burrow, loosening and breaking apart rock
  2. 2. the removal of rock particles by Wind, water, ice, or gravity
  3. 3. the process that breaks down rock through chemical changes
  4. 5. acidic water wears away at rock
  5. 6. the process that breaks down rock
  6. 9. when ice melts the water seeps into the cracks of a rock when the water freezes it splits the rock even more