Across
- 2. loose material on the Earth's surface
- 5. where oil and natural gas are formed
- 7. removal of nutrients from the soil by rain water
- 9. fossil fuel in the solid form
- 10. type of rock related to volcanic activities
Down
- 1. plates that move away from each other
- 3. the liquid rock that comes out of the volcano
- 4. vent in Earth's crust
- 6. extraction of minerals from the soil
- 8. outermost layer on the Earth