Across
- 5. planet friendly energy source
- 8. what we do with paper, plastic, and glass
- 9. produce clean oxygen
- 10. reduce _____!
Down
- 1. environmental issue
- 2. most of earth's surface
- 3. color of earth day
- 4. energy derived from the sun
- 6. animals at risk of extinction
- 7. earth day month