<human>:  How did the theory of the Origin of Species Activity come about?
<bot>: Charles Darwin was the first to propose the theory of evolution by natural selection. In 1859, Darwin published his book On the Origin of Species, in which he laid out the theory of evolution by natural selection. In his book, Darwin explained how evolution by natural selection could explain the diversity of life on Earth. Darwin’s theory of evolution by natural selection was not accepted by the scientific community at the time. It was only in the 20th century that the theory of evolution by natural selection was widely accepted.