AP BIOLOGY

Detailed explanation-1: -The theory of evolution is a shortened form of the term “theory of evolution by natural selection, ” which was proposed by Charles Darwin and Alfred Russel Wallace in the nineteenth century.

Detailed explanation-2: -English naturalist Charles Darwin developed the idea of natural selection after a five-year voyage to study plants, animals, and fossils in South America and on islands in the Pacific. In 1859, he brought the idea of natural selection to the attention of the world in his best-selling book, On the Origin of Species.

Detailed explanation-3: -Charles Darwin, the 19th century naturalist, is given credit for the theory, not because he was the first person to suggest evolution occurs, but because he proposed (in his seminal 1859 text, On the Origin of Species) a mechanism that explains the process of change.

Detailed explanation-4: -More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.