The compact Toyota Corolla has continually been one of the worldâs best-selling cars. This Asian compact sedan hit the American market in 1969, and 2007 models are still being produced. Reliability, fuel economy, as well as its low purchase price give this compact the edge over the competition.
The premise of Darwin's theory of evolution by natural selection is that all life, from mammals to single celled organisms, is related through descent with modification from common ancestral stock. The mechanism he proposed to explain descent with modification was natural selection.he premise of Darwin's theory of evolution by natural selection is that all life, from mammals to single celled organisms, is related through descent with modification from common ancestral stock. The mechanism he proposed to explain descent with modification was natural selection.
Natural selection and adaptation are two basic concepts which are coming under Darwinâs Theory of Evolution. In Darwinâs theory, he said that all life is related and has descendants from a common ancestor. All species, therefore, can include in a vast tree of life. Natural selection is the known cause of adaptations, but the other non-adaptive causes like mutation and genetic drift are also responsible for evolution of life on earth.