Ans: Microbes, also known as microorganisms, are tiny living things that can be found on any surface. However, they are not visible to the naked eye, you require a microscope to see them. Some examples of microorganisms or microbes are fungi, bacteria, algae and protozoa.
Some microbes are harmful, like pathogens that cause various infectious diseases; however, many microbes facilitate human welfare. A few useful microbes are rhizosphere, microbiome, prebiotics and fungi.
Some examples of microbes in human welfare can be seen in food production and in sewage treatment.