Question

about any useful and harmful microorganisms

Answer 1

They are grouped into various groups like Bacteria, fungi, algae, protozoa and viruses. Many of these organisms are useful to human and nature while some are harmful and even cause diseases. Harmful effects of microorganisms: Bacteria: Causes various diseases such as typhoid, diarrhea, and cholera.

Answer 2

They are group like fungi, bacteria, virus etc. The harmful microorganism is virus like a. I. D.s, malaria etc and the useful microorganism are fungi like yeast.