Darwin's Natural Selection Theory
The core of Darwin's theory of evolution is the pillar of natural selection theory. For example, the related species is characterized by the diversity of natural species, and the important content is supported by over-breeding, survival competition, genetic variation and survival of the fittest. For Darwin, he believes that both animals and plants, both of which have a strong fecundity, can reproduce a strong descendants. But when the environmental load force tolerated in an environment is too large, there will be a struggle between the same species, resulting in a small number of individuals who can grow safely and survive, but will also retain the better traits.
About the natural selection, There is a well-known example. There are a group
of birds named Geospiza fortis on the Galapagos Islands. The bird's beak of each bird is somewhat different in thickness, and the fruit of the plant is eaten, but there is no natural weather pressure, so all kinds of bird beak thickness of the birds can exist.
But in 1977 the island had a serious drought, the number of fruit dropped, leaving only the shell more hard fruit, resulting in those birds are not thick enough to bite the fruit shell shell and starved to death, Only those birds with strong enough to bite the fruit of the bird survived, according to the survey that year after the flood, the birds on the island average bird beak thickness increased.
According to this example, it is possible to prove the natural selection of Darwinian theory of evolution.
About the natural selection, There is a well-known example. There are a group
of birds named Geospiza fortis on the Galapagos Islands. The bird's beak of each bird is somewhat different in thickness, and the fruit of the plant is eaten, but there is no natural weather pressure, so all kinds of bird beak thickness of the birds can exist.
But in 1977 the island had a serious drought, the number of fruit dropped, leaving only the shell more hard fruit, resulting in those birds are not thick enough to bite the fruit shell shell and starved to death, Only those birds with strong enough to bite the fruit of the bird survived, according to the survey that year after the flood, the birds on the island average bird beak thickness increased.
According to this example, it is possible to prove the natural selection of Darwinian theory of evolution.