Across
- 4. What is the word for coal,oil and natural gases?
- 7. Name of that change?
- 9. carbon+oxygen
- 10. It make weather more...?
- 11. Our planet.
Down
- 1. Total amount of gases produced by person or activity?
- 2. Where is that happen?
- 3. Gases make that change?
- 5. Who are responsible for that change?
- 6. What increase?
- 7. What is the main reason in farming caused the change?
- 8. A period of dry weather