Across
- 2. Cars can make these
- 3. ex. putting oil in the ocean
- 5. When an animal species dies out
- 8. Reduce, reuse, _______
- 9. The second layer of the earth's atmosphere
- 10. Energy such as solar and wind power
Down
- 1. Turning excess organic materials into fertilizer
- 4. Where your trash gets taken
- 6. Place where animals live
- 7. To keep in a good condition