Across
- 1. Recycling something that results in a product of higher value than the original item
- 4. To keep safe or protect something
- 9. Something that comes from a living organism
- 13. Produced by the action of the sun’s light or heat
- 14. The natural home of an organism
- 15. System of garbage disposal in which the waste is buried
- 17. Something that can be replenished
- 18. Community or group of living organisms
- 19. Mixture of gases that surrounds the Earth
- 20. Study of organisms
Down
- 2. Mixture of organic residues
- 3. Everything that is around us
- 5. Being able to maintain or support a process continuously over time
- 6. Odorless, colorless gas found in Earth’s atmosphere
- 7. Trash or garbage lying scattered around
- 8. The action of making something unclean
- 10. Save or protect
- 11. No longer existing
- 12. Something that has been released (ex: gas, heat, sound)
- 16. Converting waste into reusable material