Across
- 5. Threatens global biodiversity
- 7. Sustainable public transport system in Qatar
- 8. Precious resource in arid regions
- 11. Clean energy from the sun
- 12. Pollutes oceans and harms marine life
- 14. Turns waste into reusable materials
- 15. Trees that protect Qatar’s coastline
Down
- 1. Greenhouse gas driving climate change
- 2. Variety of life essential for ecosystems
- 3. Clean energy from air movement
- 4. Energy-efficient lighting technology
- 6. Leading the way in solar energy development
- 9. Turns organic waste into soil nutrients
- 10. Cars powered by renewable energy
- 13. Roofs Plants on buildings to improve air quality