A species is a complex system of intraspecific groups that develops in the process of evolution under certain conditions. The most common intraspecific structural unit is a population. Within the population, one can distinguish smaller units: flocks, families, prides, which are less stable and can easily disappear, merge and form again. This allows interaction in the protection of the territory, joint hunting, breeding, housing construction, etc. Plants with cross-pollination are forced to live in groups, plant groups create a certain microclimate, release volatile for interspecific control.
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.