Across
- 4. process where water vapor cool forming clouds
- 6. loss of water in plants through stomata
- 8. process by which water fall down from clouds
- 9. layer above earth that prevents UV rays from entering
- 11. movement of air from sea to land during day
- 14. sphere where litho, hydro and atmosphere interact
- 16. movement of air from land to sea during night
- 17. polyatomic ion with 1 calcium, 1 carbon and 3 oxygen atoms
- 18. current of air due to uneven heating
- 21. cutting down of trees and plants
- 22. process where nitrogen is obtained from air
- 24. carbon in elemental from which is lustrous
- 25. bacteria which convert nitrogen intoabsorbable form
Down
- 1. gas present in the earths atmosphere by 21%
- 2. sphere which represents water on earth
- 3. top layer of soil which supports plant growth
- 5. contains one nitrogen and three oxygen atoms
- 7. gas present in the earth's atmosphere by 78%
- 10. process of burning combustible substances
- 12. process where plants make food using sunlight, water,CO2
- 13. process by which organisms inhale in oxygen
- 15. organism on the surface of rocks which powder it down
- 19. gas present in the earth's atomosphere by 0.3%
- 20. process by which water rises up in form of vapour
- 23. nitrate to elemental nitrogen