Under unfavorable conditions, the bacterium turns into a spore, in which a very thick shell is formed in comparison with the resistant shell of the bacterium, which protects the bacterium from the harmful effects of the external environment and helps to wait out the unfavorable period. If a bacterium has an intensive metabolism, then in a spore it slows down greatly.
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.