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.
Vestigial structures are different parts in an organisms body that are no longer necessary for their survival, but were necessary for their ancestors. An example of a vestigial structure would be the small leg bones found deep within the body of some whales. Although whales no longer need legs for support, as they live in the oceans, their ancestors did have legs.