Natural Selection

Natural selection is the process by which traits that are more beneficial to a species' survival and reproduction become more common in that species over time. This happens when organisms with desirable traits are more likely to survive and reproduce, passing their desirable traits to the next generation, while organisms with less desirable traits are less likely to survive and reproduce, not passing their less desirable traits to the next generation. As a result, the gene pools of species change over time, leading to evolution. Natural selection is one of the main mechanisms of evolution and is critical for the survival of a species, leading to the formation of new species and the adaptation of existing species to their environment.