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The economically important uses of heterotrophic bacteria are:

  1. They enhance the fertility of the soil by nitrogen fixation.
  2. Production of curd and yogurt from milk, Cheese, Butter, Wine
  3. Production of antibiotics
  4. They form an essential part of biogeochemical cycles during which they release essential elements such as Nitrogen and Carbon for recycling.
  5. Cleaning of Oil spills