There are a huge number of taxa of living organisms. For example, the systematic position of a domestic dog can be described as follows. Domestic dog is a member of the genus Wolf of the Wolf family Squad of Predatory class Mammals of the subtype Vertebrate type Chordata. Along with a domestic dog, the genus Wolf includes wolves, jackals, coyotes, dingoes.
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.