The struggle for existence is associated with the natural development of organisms. There is constant natural competition between all creatures: they fight with each other for territory, food, etc. Clashes also occur between representatives of the same species (for example, for the female during the breeding season). The struggle for existence leads to the emergence of the so-called natural selection, thanks to which only the strongest individuals survive. Thus, the gene pool of a particular species is improved and its future is secured.
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.