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  1. Home
  2. O: 60 terms
  1. objection
  2. observation satellite
  3. occupational disease
  4. occupational health
  5. occupational health care
  6. occupational safety regulation
  7. ocean outfall
  8. oceanic climate
  9. odour nuisance
  10. off-site
  11. offence against the environment
  12. office
  13. official hearing
  14. offset policy (emissions trading)
  15. oil boom
  16. oil disaster
  17. oil pipeline
  18. oil refinery
  19. oil residue recuperation
  20. oil slick
  21. oil-based energy
  22. onchocerciasis
  23. open sea fishing
  24. operating data
  25. order
  26. ordinance
  27. organic carbon
  28. organic farming
  29. organic nitrogen
  30. organic substance
  31. organisation (law)
  32. organisation of teaching
  33. organisation of the legal system
  34. organochlorine compound
  35. organohalogen compound
  36. organometallic compound
  37. organonitrogen compound
  38. organooxygen compound
  39. organophosphorous compound
  40. organosilicon compound
  41. organosulphur compound
  42. organotin compound
  43. oven
  44. overcrowding
  45. overfertilisation
  46. overfishing
  47. overflow (outlet)
  48. overhead power line
  49. overpopulation
  50. ownership
  51. oxidation
  52. oxidation-reduction
  53. oxide
  54. oxygen
  55. oxygen content
  56. oxygen deficiency
  57. oxygenation
  58. ozone
  59. ozone layer depletion
  60. ozonisation