Across
- 2. the opposite of "to empty"
- 4. to put aside
- 7. the opposite of dirty
- 8. synonym of discovery
- 10. to make something unclean
- 11. that can be used again
Down
- 1. the world around us
- 3. advancement towards something better
- 5. the act of calling for protection of the environment
- 6. the most useful liquid
- 9. you do it , to make tea