Across
- 3. it makes something humans can breathe
- 4. not clean
- 5. save
- 8. something you throw away
- 9. this can destroy our planet
- 11. it can be clear and can hold water
- 12. the third planet from the sun
Down
- 1. something you need on a hot day
- 2. separating trash
- 6. animals and humans need this to live
- 7. not dirty
- 10. something you throw away