If the state of the environment-forming species is violated, for example, felling, appearance and species composition of the community will change significantly. Overgrowing cuttings that arose on the site of old spruce forests abound in tall grasses and deciduous trees, primarily birch. Thus, the disappearance of environment-forming agents leads to the disruption of the main biotic connections and, as a consequence, to a change of communities.
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.