Across
- 3. unwanted matter of material of any type
- 8. strong and dangerous gas; smoke
- 9. number and variety of plant and animal species in a particular area
- 10. bad for the soil and vegetable you make there
Down
- 1. gradual increase in world temperatures caused by pollution gasses
- 2. damage cause to environment
- 4. earth day is in month
- 5. collecting and treat rubbish to produce useful materials
- 6. extra large wave
- 7. rain contains amount of harmful chemicals