Across
- 2. – Planting trees again
- 3. – Energy from the sun
- 5. – Weather changes for a long time
- 8. – Trash that is hard to compost
- 11. – When the Earth becomes hotter
- 12. – Many kinds of plants and animals
- 13. – Too much water after heavy rain
- 16. – Dirty air from cars and factories
- 18. – Things that make the environment dirty
- 19. – Animals that may disappear
- 20. – Energy from wind
Down
- 1. – Protecting nature
- 4. – Using old things again
- 6. – Using less electricity
- 7. – Dirty water in rivers or seas
- 9. – Home of animals
- 10. – Gas from cars and factories
- 14. – Cutting down many trees
- 15. – Layer that protects Earth from the sun
- 17. – Place to throw garbage
