The biomass of an ecosystem and its biological productivity can vary greatly. For example, in a dense forest, the total biomass of organisms is very large compared to its annual growth – production. Whereas in the pond, the small accumulated biomass of phytoplankton has a high rate of renewal — production of products due to rapid reproduction.
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.