Across
- 2. garbage that we throw out
- 3. to reuse something rather than throw it away
- 5. layer of earth that protects us from the sun
- 7. what we breathe every day
- 9. letting out bad elements into our environment
Down
- 1. liquid that we need to live
- 4. where we take out trash
- 6. third planet on earth; where we live
- 8. everything around us