Across
- 2. packaging that is environmentally friendly
- 4. ...change
- 5. unpleasant and dangerous gas or smoke
- 8. layer(s) of gases surrounding a planet
- 9. a long period with little or no rain
- 10. unwanted matter or material of any type
Down
- 1. ...warming
- 3. when land changes into desert.
- 6. type of petrol without led in it
- 7. the removal of a forest or stand of trees
- 11. rain precipitation with acidic components