Across
- 2. (animal logo on WWF)
- 4. (assist in)
- 6. (day where Earth hour takes place every year)
- 7. (something needed to operate electricity)
- 8. (weather conditions)
- 14. (surrounding)
- 15. (the month Earth hour takes place)
- 16. (harmless to environment)
- 19. (animals that live in the wild)
- 20. (World Wide Fund for Nature)
Down
- 1. (all over the world)
- 2. (a celestial body orbiting around the Sun)
- 3. (protecting something)
- 5. (a living thing that grows in the earth)
- 7. (keep safe)
- 9. (animals that are at risk of extinction)
- 10. (something unwanted)
- 11. (contamination of the surrounding)
- 12. (reuse)
- 13. (the planet on which we live)
- 17. (products of the earth)
- 18. (resources that are always available)