representatives of bacteria and protozoa that live in the human intestine. There are 250 billion microorganisms in 1 g of the contents of the colon. Many substances that enter the human body with food are digested with their active participation. Normal development is impossible without intestinal symbionts. A disease in which the number of symbiotic organisms in the intestine decreases is called dysbiosis. Microorganisms also live in tissues, cavities and on the surface of human skin.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.