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.
Darwin Theory of natural selection was proposed by Charles Darwin in 1858. Darwin believed all plants and animals had evolved from a few common ancestors by means of natural selection. Plants and animals produce many offspring, but some of the young die before they can become parents. According to Darwin's theory, natural selection determines which members of a species die prematurely and which ones survive and reproduce. All living things must compete for a limited supply of food, water, space, and other necessities.