Question

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give three points each of usefulness of microorganism and harm caused by microorganisms​

Answer 1

Microorganisms help us in food sector. They are used for curdling of milk, preparation of bread, cake, etc. (ii) Microorganisms are used to produce alcohol at large scale. ... (vii) Microorganisms are used to prepare vaccines for various diseases

Explanation:

Microorganisms are also very harmful to us. They cause a number of diseases inhuman as well as in other animals. Common cold, Tuberculosis, Measles, Chicken Pox, Polio, Cholera, Typhoid, Hepatitis B, Malaria, are some common human diseases caused by microorganisms.

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Answer 2

Explanation:

They help us in following ways: (i) Microorganisms help us in food sector. They are used for curdling of milk, preparation of bread, cake, etc. (ii) Microorganisms are used to produce alcohol at large scale. ... (vii) Microorganisms are used to prepare vaccines for various diseases.