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