Across
- 3. The blanket of air that surrounds the Earth
- 5. Gas that supports burning
- 8. Fine hairs and ___ present in the nose prevents dust from entering the respiratory system
- 9. Moving air is called ___
- 10. Burning of garbage and fuel produce ___
Down
- 1. The process that uses carbon dioxide
- 2. Most abundant gas in the air
- 4. Wet cloths dry quickly on a windy day due to _____ of water.
- 6. A ____ generates electricity from wind
- 7. Amount of water vapour present in the air