Across
- 5. invisible gaseous substance surrounding the earth
- 10. the destruction of something by burning
- 11. waste removal
- 12. unusable byproduct from a process
- 13. planet on which we live
- 14. to use waste again in another manner
Down
- 1. ability to be maintained at a certain rate or level
- 2. introduction of harmful materials into the environment
- 3. state of making or being made impure by polluting or poisoning
- 4. waste dangerous garbage
- 6. convert into reusable material
- 7. envelope of gases surrounding the earth or another planet
- 8. production and discharge of something for example gas
- 9. make smaller
- 14. energy outcome from incineration