Bacteria play a huge role in the existence of the modern biosphere. Many of them cause rotting and fermentation processes. There are prokaryotes living in symbiosis with other organisms, such as nodule bacteria on the roots of legumes. Therefore, the stability of ecosystems and the global circulation of chemical elements and compounds in nature are disrupted, the processes of decay and other major ecosystem processes cease.
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.