There are two types of classification – artificial and natural. In the artificial classification, one or more easily distinguishable characters are taken as the basis. It is created and applied to solve practical problems, when the main thing is usability and simplicity. Linnaeus’s classification is also classified as artificial, since it did not take into account important natural relationships
Natural classification is an attempt to use the natural relationships between organisms. In this case, more data is taken into account than in the artificial classification, while not only external, but also internal signs are taken into account. Similarities are taken into account in embryogenesis, morphology, anatomy, physiology, biochemistry, cell structure and behavior.
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.