Charles Darwin's Theory Of Evolution By Natural Selection

Around the world, a theory of evolution by natural selection is supported by many scientists. Charles Darwin was one of the scientists who have create the most famous theory of natural selection. The theory of evolution by natural selection says that animals change in each generation because of natural selection. Natural selection is when animals can survive more easily because of their features, such as, colour, ear shape, and digestion. Over time, the animals that can survive are the ones that are more suited to their environment. For example, in snows periods white rabbits are more likely to survive. Brown rabbits are not as likely to survive because they are easier to find by the predators. We know that offspring get their gene from their parents. Therefore, rabbit’s offspring in this environment will become all white. Charles Darwin’s theory of evolution was published in 1859 as a book title, The origin of Species. The evolution was started at 1809 and ended in 2009.
By looking back many years, scientists have investigated the evolution of polar bears from brown bears, specifically skin colour, skull and ear shape, and digestion of seal fat. …show more content…
They were white and they were living on the ice, but brown bears were not living on the ice, they lived in the forest and they were brown. Scientists believe that, polar bears are the one species that it is the most realistically related to brown bears. Polar bears skin colour is black but they have thick and white fur, which brown bears do not. Brown bears have black skin but their fur colour is highly flexible, reaching from greyish white through bluish and brownish shades to almost black. Also, they can be called shaggy haired