Each biosystem (like any system) is a set of elements (components) connected into a single whole that perform certain functions. The interrelationships of such elements reflect the structure of the system, the complexity of its organization. Integrity, discreteness and a certain stability in space and time are also inherent in biosystems. Therefore, the organism, cell and population can be classified as biosystems.
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.