Chambray, by contrast, is a fabric defined by the way it is made: a plain weave of colored warp and white filling yarns. It is usually made of cotton fibers, but it can also be made with linen or silk, and its primary use is shirting. credit: Jupiterimages /Polka Dot/Getty Images. Linen is made from flax fibers.
Best Answer: vestigial structures are considered evidence because scientists believe they are structures that were once used by a species ancestors but are not longer needed. these structures do not impair the organism in any way, so there is no need for evolution to get rid of them. for example, the human appendix is considered a vestigial structure. it is believed that in earlier humans, the appendix helped to break down foods like plants.
And that evidence is vast, varied, and magnificent, drawn from a huge spectrum of scientific inquiry ranging from genetics, anatomy, and molecular biology to paleontology and geology. Why Evolution Is True is a succinct and accessible summary of the facts supporting Darwinian evolution. Scientists today are finding species splitting in two, observing natural selection changing animals and plants before our eyes, and discovering more and more fossils capturing change in the past-dinosaurs that have sprouted feathers, fish that have grown limbs.