std 8

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Across
  1. 2. dead remains of living organisms
  2. 7. medicines which kill or stop growth of microorganisms
  3. 14. acetic acid
  4. 16. carrier of disease
  5. 17. cutting of crop after it is mature
  6. 20. lever system
  7. 21. supply of water at regular intervals
  8. 26. uncultivated
  9. 27. large scale storage
  10. 28. promotes formation of curd
  11. 29. caused by virus
  12. 31. modern method of irrigation
  13. 34. separation of grain from chaffe
  14. 35. big lumps of soil
  15. 39. carrier of malaria
  16. 40. carrier of dengue virus
Down
  1. 1. heating and suddenly cooling milk
  2. 3. removal of weeds
  3. 4. plants of same kind grown at one place on large scale
  4. 5. loosening and turning of soil
  5. 6. source of petrol and diesel
  6. 8. rainy season crops
  7. 9. slow process of conversion of dead vegetation to coal
  8. 10. compressed natural gas
  9. 11. present in unlimited quantities
  10. 12. caused by protozoa
  11. 13. unwanted plants
  12. 15. present in limited quantities
  13. 18. fights disease carrying invaders
  14. 19. petroleum conservation research association
  15. 22. fix nitrogen
  16. 23. disease carrying organisms
  17. 24. pulley system
  18. 25. winter season crops
  19. 30. caused by bacteria
  20. 32. petroleum gas in liquid form
  21. 33. example of fertiliser
  22. 36. seed drill
  23. 37. check the growth of microorganisms
  24. 38. traditional method of irrigation