The central message of the darwins theory is?

Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin (1809-1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce.

Answer: Biological Evolution theory

Explanation:

Charles Darwin states that all species of organisms arise and develop through the natural selection of small inherited variations that increase the individuals ability to compete, survive and reproduce.