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

Virus grow only inside cells of other plants and animals, whereas other microorganisms can grow by itself.

Other microorganisms have both positive and negative uses, but virus only has negative effects - it causes diseases.

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo