Charles Darwin and Alfred Wallace independently discovered the process of natural selection.
Natural selection is the process by which organisms adapt to their environment, and it is one of the main mechanisms by which evolution occurs. Organisms that are better adapted to their environment are more likely to survive and reproduce. Over time, populations of organisms that are better adapted to their environment will increase in number.
Darwin and Wallace’s work helped to establish the theory of evolution, which states that all life on Earth is related, and that it has changed over time as a result of natural selection. Evolution is an ongoing process, as organisms continue to evolve over time as they adapt to new environmental pressures.