Across
- 3. solid part of earth
- 8. world coordinating units
- 10. 71% of earth surface
- 11. hold by atmosphere
- 14. very tall and have big grass
- 17. father of science
- 21. world largest mountain
- 22. ______types of pollution
- 23. study of natural world
- 24. where the living beings live
Down
- 1. mountain or hill with opening
- 2. interaction between physical surrounding around us
- 4. give o2
- 5. ordinary routine of every living beings
- 6. part of tress or plants
- 7. national tree of india
- 9. found in east
- 12. greenhouse gas
- 13. found in stratosphere
- 15. creature have fifth sense
- 16. harmful for environment
- 18. lungs of the earth
- 19. source of energy
- 20. ______types of environment