What are the differences between Darwin’s theory of evolution and Lamarck’s theory of evolution?

Darwin’s theory of evolution was different from Lamarck’s theory of evolution. Darwin suggested that evolution occurred in the course of the struggle for the existence of organisms, the presence of adaptations and mutations in individuals, and also through the possibility of transferring these features through heredity. Lamarck’s theory was that the organs of organisms were constantly exercising, working, during which they improved and new adaptations appeared. In the end, Charles Darwin was right. His theory was slightly refined with new data and subsequently proven.