rock world

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Across
  1. 5. the science that deals with the earth's physical structure and substance
  2. 6. gradual destruction of things caused by wind, water and other natural agents
  3. 8. the rigid outer part of the earth, consisting of the crust and upper mantle
  4. 10. the process of obtaining coal or other minerals
  5. 11. a building or buildings and the land belonging to it or them
  6. 12. outer layer of our planet
Down
  1. 1. the process of wearing or being worn by long exposure to the atmosphere
  2. 2. preserved remains or traces of once living things
  3. 3. solidified from lava or magma
  4. 4. polluted rainfall that can cause harm to lakes, forests and crops
  5. 7. rocks changing from heat and pressure
  6. 9. The planet we live on