Across
- 1. things we throw away
- 4. energy from the sun
- 5. use less of something
- 8. use something more than one time
- 10. hard, clear material for bottles
- 13. dirty air, water, or land
- 14. use old things again
Down
- 2. dirty air from cars or fires
- 3. energy from moving air
- 6. power we use
- 7. harmful substances
- 9. man-made material that pollutes
- 11. the Earth we live on
- 12. air, water, land, and nature
- 13. material made from trees