The term often leads into confusion, however, since international compact cars are somewhat larger than their North American equivalents, mostly because no supermini/subcompact size is manufactured by American, Mexican and Canadian car makers up to date.
By the late 1860's, Darwin came to describe this process as the survival of the fittest. This is very different from Lamarck's incorrect idea that the environment altered the shape of individuals and that these acquired changes were then inherited.
Darwin's Theory of Evolution: Did Man Really Evolve from Apes? Charles Darwins theories on evolution upended the scientific community in the middle of the 19th century. He proposed that small changes over billions of years created the species we have today. Darwin felt that it was a survival of the fittest.