Answer:
Charles Darwin's theory of evolution, also known as the theory of natural selection, is the idea that all species of organisms have evolved over time through a process of descent with modification. According to this theory, populations of organisms change over the course of generations through a process of natural selection, in which some individuals are more successful at reproducing and passing on their traits to the next generation than others. These traits, which can be physical or behavioral, are passed on through the genes that are passed from one generation to the next. Over time, the frequency of these traits in the population may change as a result of this process of selection, leading to the evolution of new species.