| 41. | Acidification lowers the level of carbonate ions available for calcifying organisms to form their shells.
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| 42. | Crayfish, their main food, are sensitive to acidification and accumulation of heavy metals.
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| 43. | Acidification also occurs when leaching of bases.
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| 44. | Acidification of the organic phase yields rubrocyanine, which can be detected by colorimetric methods.
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| 45. | It is synthesized as a catalytically inactive enzyme which is activated and autoproteolyzed upon acidification.
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| 46. | Problems range from environmental effects of fishing techniques, described above, to ocean acidification.
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| 47. | This makes the area sensitive to acidification.
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| 48. | It is produced by distillation of the polysulfane oil obtained by acidification of polysulfide salts.
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| 49. | The acidification of the oceans would kill many organisms that build shells from calcium carbonate.
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| 50. | However, ocean acidification is predicted to occur at a rate that evolution cannot match.
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