Across
- 4. Someone who wants to bring change.
- 7. Anything that makes the earth dirty and unhealthy.
- 8. The planet humans live on.
- 9. Use less water and electricity.
Down
- 1. Turn old materials into new materials.
- 2. Items we no longer use or need.
- 3. Put materials like paper, plastic, and glass in it.
- 5. When you don't throw you waste in the trash, you _____.
- 6. A kind of bag you can use many time is ______.
- 10. A gas released by factories and cars.