Across
- 4. harmful chemicals in the air and water
- 6. when there is no rain for a long time
- 8. cutting down the trees
- 9. ice ... (the ice in the Artcic and Antarctic)
- 11. fossil ... (coal, oil and gas)
Down
- 1. ...gases (gases that trap the sun's heat)
- 2. tropical forests
- 3. ...change (the Earth is getting hotter due to this)
- 5. ...dioxide (CO2)
- 7. tropical storms
- 10. ...stations (these produce electricity)