Across
- 6. Long term changes to the earth
- 8. A process in which the air temperature rises
- 11. The state of adjusting
- 13. Easily broken down
- 14. Food that is discarded or uneaten
- 15. Power derived from physical or chemical resources
Down
- 1. A community of interacting organisms
- 2. The removal of salt from salt water
- 3. The planet third from the sun
- 4. Energy derived from natural resources
- 5. Meeting the needs
- 7. An object with toxic or harmful effects on the earth
- 9. A state of stability
- 10. A transparent, odorless, tasteless liquid
- 12. Reuse