Why is the circulation of substances considered the main condition for the existence of a natural community?

To ensure the infinity of life, substances must move in a circle. There are many cycles in the world. If there were not at least one, the species that participated in it would die.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.