According to Darwin, the organic evolution is due to

Darwin proposed that the driving force behind organic evolution is the process of natural selection, which arises from
Competition between individuals of different species that occupy the same ecological niche. This process is called interspecific competition. The individuals best adapted to their environment will have a better chance of survival and reproduction, passing on their advantageous traits to their offspring. Over time, this leads to the gradual accumulation of changes in the genetic makeup of a population, resulting in the emergence of new species.
(1) Competition within closely related species may occur, but it is not the primary driving force behind organic evolution, according to Darwin.
(2) Reduced feeding efficiency in one species due to the presence of interfering species (intereference competition) is
The principle of competitive exclusion formulated by Gause.
(3) Intraspecific competition (competition within a species) also exists in nature but it not the most potent force in
Organic evolution, according to Darwin. “When Darwin spoke of the struggle for existence and survival of the fittest
In nature, he was convinced that interspecific competition is a potent force in organic evolution” (Ref. NCERT Class XII Biology Textbook).