The problem of the extinction of some animals is not the last place in the theory of evolution and is of paramount importance in Darwinian teaching. The number of species living at the present time occupies only an insignificant part of the total number of animals that have ever appeared on the planet (less than 1%). 99% of categories have finally died out, and there are many reasons for this.
The most susceptible to extinction are animals found in one or more places in geographically limited areas. If the entire range has undergone human activity, then the species living in it may disappear. The direct reason for the extinction of some types of animals in natural conditions is a decrease in their number below the critical level, determined by the laws of population genetics. Critical is the level of abundance, below which the possibility of closely related crossing becomes large, which leads to a decrease in the genetic diversity of species. As a result, there is a proportion of offspring with congenital disorders that increase mortality in new generations. Species that have formed as a result of one or more populations are also subject to rapid extinction. Any category can disappear as a result of fires, earthquakes, disease and human activity. Categories with different populations are less prone to extinction. Compared to small ones, large animals have huge individual territories. They need a lot of food, and they often become prey for humans. Large animals are more susceptible to extermination, not only because they are prey, but also because they compete with humans in the hunt for game, sometimes attack people and livestock. There are populations of animals that feed on large areas. They are also prone to extinction, provided that part of their range is destroyed. With the natural development of nature, environmental changes force some categories to adapt to new conditions. Animals incapable of adaptation are forced to migrate to suitable habitats. Otherwise, their species is threatened with extinction. Rapid development of natural resources outstrips adaptation, leaving migration as the only option. Categories of animals that cannot cross fields, roads and other disturbed habitats are doomed to extinction. Utilitarianism has always been a prerequisite for the extinction of highly valuable species of animals. Overexploitation can drastically reduce population sizes. If hunting is not regulated by law, then certain types of animals may be on the verge of extinction.
