Across
- 4. ....produced by burning fussel fuels
- 5. long term change in average eather
- 7. planet we live in
- 8. another word for climate change
- 9. ...fuels
- 10. The Sun together with the eight planets
- 11. physical quantity that expresses hot and cold
Down
- 1. natural process that warms the Earth's surface
- 2. energy that comes from natural sources
- 3. the process through which plants use water and carbon dioxide to create their food, grow and release excess oxygen into the air
- 4. brown-ish black rock
- 6. most common element on Earth