AP BIOLOGY

Detailed explanation-1: -Darwin and a scientific contemporary of his, Alfred Russel Wallace, proposed that evolution occurs because of a phenomenon called natural selection.

Detailed explanation-2: -But in the mid-1800s, Darwin and the British biologist Alfred Russel Wallace independently conceived of a natural, even observable, way for life to change: a process Darwin called natural selection.

Detailed explanation-3: -British naturalist Alfred Russel Wallace worked on a diversity of plants and animals of Malay Archipelago, reached at the same conclusion as Darwin. Wallace’s book, “Contributions to the Theory of Natural Selection", was published in 1870.

Detailed explanation-4: -Ask most folks who came up with the theory of evolution, and they’ll tell you it was Charles Darwin. In fact, Alfred Russel Wallace, another British naturalist, was a co-discoverer of the theory-though Darwin has gotten most of the credit.