As part of the biogeocenosis, the population performs a certain function in it: it either serves as an energy supplier (creates nutrients for someone, i.e. serves as food), or consumes energy itself (eats someone). Accordingly, the population occupies a certain position in the community, actively participating in the circulation of substances and the flow of energy, that is, it occupies one or another ecological niche in the biogeocenosis.
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.