<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. The theory of evolution by natural selection states that organisms change over time through a process called natural selection. This process causes organisms to adapt to their environment in order to survive. In order to survive, organisms must adapt to their environment by changing their genes. These changes in the gene pool are passed down from one generation to the next, and over time, these changes accumulate and result in the development of new species.