MICRO ORGANISMS CLASS VIII

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Across
  1. 3. Disease causing microorganisms
  2. 5. Using bacteria in treatment of sewage
  3. 7. Cells which identify and destroy disease causing microbes
  4. 8. Harmful materials released by microorganisms
Down
  1. 1. Science which deals with the study of microorganisms
  2. 2. Method of preserving milk by heating followed by quick cooling
  3. 4. Chemicals that inhibit the growth of harmful microorganisms
  4. 6. Natural ability of an organism to destroy the infection