Across
- 3. - Essential for life.
- 7. - Protecting nature.
- 8. - Photosynthesis.
- 11. - Provide oxygen.
- 12. - Plant growth.
- 14. - Power source.
- 15. - Reduce, reuse, recycle.
Down
- 1. - Large water body.
- 2. - Source of energy.
- 4. - Biodiversity.
- 5. - Rain, sun, wind.
- 6. - Our planet.
- 9. - Breathed in.
- 10. - Harmful substances.
- 13. - Reuse materials.