The positive role of bacteria.

Contrary to the widespread misconception, bacteria have a lot of positive qualities that a person uses in his life, and without some types of bacteria, human life is completely impossible. For example, lactic acid bacteria are used in industry for the production of kefir, fermentation bacteria are involved in the production of beer and kvass; the human body itself contains billions of bacteria (in the gastrointestinal tract, bacteria help digestion, on the skin they protect against the penetration of pathogens of various diseases).