Darwin+and+LaMarck

Darwin's Theory of Evolution was the belief of survival of the fittest. Complex creatures will evolve from simpler ancestors. Due to random genetic mutation all organisms have a genetic code, the beneficial mutations will aid for a better survival. These beneficial mutations will be passed on to each generation resulting in a new species that evolved from a common ancestor.Darwin also believed in natural selection which meant that each generation will better have traits to help them survive in their environment. Many organisms will adapt to the environment making it so the things that the organism inherited through traits is no longer needed to better survive in the environment they live in now.

LaMarck's Theory of Evolution was the belief that as the environment changes each generation needs new adaptations. Some adaptations that organisms evolve may not help them now.