Rock formation

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Across
  1. 3. the process by which rocks break down
  2. 5. formed from weathered rocks
  3. 9. type of igneous rock
  4. 10. things that make up the soil
  5. 12. decomposed organic materials
  6. 13. one layer of the earth
  7. 14. break down to form soil
Down
  1. 1. was once another type of rock
  2. 2. reveals different layers of soil
  3. 4. type of metamorphic rock
  4. 6. type of sedimentary rock
  5. 7. rocks formed from cooled magma or lava
  6. 8. uppermost layer of the earth's crust
  7. 11. can prove that air is in the soil