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Evolution is as much a fact as the heat of the sun. It is not a theory, and for pity's sake, let's stop confusing the philosophically naive by calling it so. Evolution is a fact." [37] Neil Campbell wrote in his 1990 biology textbook, "Today, nearly all biologists acknowledge that evolution is a fact. The term theory is no longer appropriate ...
Objections to evolution have been raised since evolutionary ideas came to prominence in the 19th century. When Charles Darwin published his 1859 book On the Origin of Species, his theory of evolution (the idea that species arose through descent with modification from a single common ancestor in a process driven by natural selection) initially met opposition from scientists with different ...
The statement "evolution is a theory and not a fact" has been used as a tactic by creationists and intelligent design advocates, causing confusion over the difference between how theory is defined and used in the field of science and how the term is used colloquially to signify "conjecture", "speculation" or "opinion". [3]
Some people are indoctrinated against the theory of evolution and simply do not think about it. But evolution is a well-established explanation of how life developed on Earth. Furthermore, the ...
Evolution is an inevitable result of imperfectly copying, self-replicating organisms reproducing over billions of years under the selective pressure of the environment. The outcome of evolution is not a perfectly designed organism. The end products of natural selection are organisms that are adapted to their present environments.
Evolution is the change in the heritable characteristics of biological populations over successive generations. [1] [2] It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations. [3]
The term evolution is widely used, but the term evolutionism is not used in the scientific community to refer to evolutionary biology as it is redundant and anachronistic. [6] However, the term has been used by creationists in discussing the creation–evolution controversy. [6]
Where the fact of evolutionary change was accepted by biologists but natural selection was denied, including but not limited to the late 19th century eclipse of Darwinism, alternative scientific explanations such as Lamarckism, orthogenesis, structuralism, catastrophism, vitalism and theistic evolution [a] were entertained, not necessarily separately.