Across
- 4. A problem which arise when CFC's having both chlorine and flourine react with ozone to give oxygen
- 5. Symbiotic bacteria involved in biological nitrogen fixation
- 6. A breeze that happens during the day
- 9. _____ is found frozen in ice-caps
- 10. A process of sweating in animals which is part of water cycle
- 13. Free living bacteria involved in biological nitrogen fixation
- 14. A living organism that contributes towards soil formation
- 17. Major process in which oxygen is returned to atmosphere
- 18. A life supporting zone
- 19. Allotropic form of oxygen
Down
- 1. _________ changes affects the breeding of animals
- 2. _______ resulted in the doubling of Co2 precentage.
- 3. A dynamic and stable system formed by the constant interaction of biotic and abiotic components of nature
- 7. Denitrifying Bacteria
- 8. Elemental form of Carbon
- 11. A breeze that happens during the night
- 12. A continent where a hole was discovered in the ozone layer
- 15. Eye problem caused due to air pollution
- 16. ____________ caused rains in Bay of Bengal