Across
- 5. all water on earth
- 7. constent movement across earth
- 10. gas Gas helps to absrob raditon
- 11. matter to change in volume
- 12. Cold and frosty
- 13. underlie the formation of mountains
- 15. gradual increase in the temperature
Down
- 1. pulverized rock
- 2. Ocean circulation
- 3. Radiation from the sun
- 4. outer layor of gases
- 6. atmospheric boundary
- 8. Warm current along equator
- 9. Originating in human activity
- 14. Living organisms
- 16. Upper mantle of earth