Question

whether microorganisms are useful or harmful how also you explain

Answer 1

micro organisms are helpful as well as harmful in the following ways:
1 . few microorganisms help in setting of curd like lacto bacillus
2 . few bacteria in human body help in maintaining immunity levels.
3.few microorganism like tapeworms are harmul for the small intestine in the stomach
4. few microorganisms can cause diseases.

Answer 2

micro organisms are useful as well as harmful..they can be harmful in that case tgat viruses,bacteria can cause a number of diseases like T.B anthrax whooping cough measles etc
the can be useful because certain yeasts are used in fermentation process to make variety of products..also in beer industry