Across
- 2. breaking down of stones, rocks and minerals over time
- 7. gases that can break down the ozone layer
- 9. opening in the Earth's surface from which hot molten rocks and gases can escape
- 10. warming rise in temperature on the Earth
- 13. magma that flows
- 14. crops grown to cover the soil and protect it
- 16. clearing of forests by cutting or burning trees
- 20. reduction or removal of industries
- 21. waves waves caused by an earthquakes that spread across the land in all directions
Down
- 1. shaking of the ground due to movement of the Earth's crust
- 3. huge ocean waves caused by an earthquake that occurs underwater
- 4. things owned by a person
- 5. layer thin layer of gas in the atmosphere that prevents ultraviolet rays from reaching the Earth
- 6. melted by heat
- 8. plants with dry fruits that split on two sides
- 11. movement of large amounts of rock and earth
- 12. erosion removal of the top layer of soil
- 14. weather conditions of a place over a period of time
- 15. using up to
- 17. substances that wear out rocks, stones and minerals
- 18. outer layer of the Earth
- 19. molten rock found in the Earth's crust