Fill in the blanks:

(a) Microorganisms can be seen with the help of a ____________.

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(b) Blue green algae fix __________ directly from air to enhance fertility of soil.

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(c) Alcohol is produced with the help of __________.

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(d) Cholera is caused by __________.

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  1. Class 8
  2. Chapter 2 Class 8 - Microorganisms : Friend and Foe

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 9 years and a teacher from the past 16 years. He teaches Spoken English, Written English, Grammar and Vocabulary at Englishtan.