What are bacteria for?

There are good and bad bacteria. Disease-causing bacteria can cause great harm to human health, animals and plants. But people have learned to use beneficial bacteria in industrial production (hormones, vitamins, acetic acid, etc.). Bacteria are involved in the process of drying tobacco leaves, making silk, rubber, cocoa, etc. Even pickling cucumbers and making fermented baked milk or sour cream will not happen without bacteria. With their help, the biological circulation takes place – the processing of animals and plants.