Across
- 2. harmful materials
- 3. chemical within an organism over time
- 6. non-liquid garbage
- 7. water unfit for certain uses
- 9. emission standards for cars
- 10. ability to keep in existence
- 11. erosion of shorelines/rainforest
- 12. reuse of unwanted material
- 13. chemicals that break down the ozone
Down
- 1. trace substances,carbon,sulfur
- 4. accumulation of pollutants
- 5. increase in the average temperature
- 8. restoring the Earth's resources
- 9. permissible amounts water pollutants