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.
22. Outline the theory of evolution by natural selection as proposed by Darwin and Wallace. 23. Describe the evidence for evolution including fossils, transitional forms, comparative embryology and homologous structures (the pentadactyl limb) and biochemical similarities.