How to retard microorganisms?

Micro- Very Small Organisms- Living Things Microorganisms are very small living things (usually microscopic).

microorganisms cause diseases

Though the word retard is used by some as a derogatory term to refer to someone of lesser intelligence than normal or in other derogatory ways, retard is a verb, not a noun. It means to cause to be...

They are beneficial microorganisms.

Micro-organisms are tiny living things. They are not able to be seen with the naked eye. There are five different types of micro-organisms: bacteria fungi viruses algae protozoa