Micro-organisms:friends or foes_

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