Micro-organisms:friends or foes_

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Across
  1. 3. dengue is spread by ...... mosquito
  2. 5. Biological treatment of sewage & industrial waste
  3. 6. study of microorganisms
  4. 8. Disease causing micro-organisms
  5. 9. common cold is transmitted by -
  6. 10. Live inside rocks in cold deserts
Down
  1. 1. milk tastes sweetish because of presence of sugar
  2. 2. first antibiotic
  3. 4. rust of wheat is caused by
  4. 7. ability of an organism to resist infection