evolution a theory

             A basic argument used by creationists is that evolution is "only a theory and cannot be proven." This
             creationist argument is based on the false assumption that the only way to "prove" evolution is for
             someone to actually observe large evolutionary changes, for example birds evolving from dinosaurs.
             Since this can't be accomplished in a few lifetimes, creationists claim that "proving" evolution is
             impossible. This argument totally ignores the enormous amount of factual data that supports the
             position that present life forms are descended from primitive ancestors. Whether evolution is true or
             not depends on a careful and rational examination of the facts.
             A fact is something that is supported by clear and incontrovertible evidence. For example, the Grand
             Canyon cuts through layers of different kinds of rock, such as the Coconino sandstone, Hermit Shale,
             and Redwall limestone. These rock layers often contain fossils, and when a layer contains fossils, they
             are characteristic of that layer. Facts may be interpreted in different ways by different individuals, but
             that doesn't change the facts themselves; they are incontrovertible.
             Another fact is that fossil skulls have been found that are intermediate in appearance between
             humans and modern apes. They have brow ridges that are larger than humans, but smaller than apes;
             likewise their teeth and jaws are larger than humans, but smaller than modern apes.
             Numerous fossils have been found that are clearly intermediate between dinosaurs and birds and run
             the gamut from non-flying reptiles with feathers to birds that retain some reptilian characteristics, like
             Persons may interpret the meaning of these fossils in different ways, but that doesn't alter the fact that
             Facts stand alone; they are independent of whether a person accepts evolution or rejects evolution.
             In the world of science there are easily a hundred thousand "facts" relating to biology, astron...

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