Across
- 3. Green plants
- 4. Harmful gases
- 6. Keeping area clean
- 7. Things around us
- 11. Waste that rots
- 12. Place where animals live
- 14. Dirty land
- 15. Using things again
Down
- 1. Waste from home
- 2. Trash thrown away
- 5. Clean energy source
- 6. Cutting trees
- 8. Making waste useful
- 9. Water in rivers
- 10. Protect nature
- 13. Dirty air