Across
- 4. Round planet where we live
- 5. trying to protect or preserve something
- 8. trash that people leave on the ground
Down
- 1. chemicals or trash that make the Earth dirty
- 2. turning the materials from trash into something new
- 3. a color that means earth friendly
- 6. to use something less
- 7. help clean the air
- 9. to use something again