Across
- 2. something invented to make work easier
- 5. A variety of ecosystem
- 7. Things that you can use
- 9. To use less of something
- 11. warming up the earth
- 12. To make something last longer
- 14. The planet that we live on
- 17. Things that can reused
- 18. A type of fuel
- 19. To contaminate things and to make things dirty
Down
- 1. The weather
- 3. The original things
- 4. To protect a area
- 6. To cut down a lot of trees
- 8. A type of chemical
- 10. To use up things
- 13. To reuse materials
- 15. Something that can be used again and again
- 16. Places where animals live