If evolution is true there must be two lines of evidence: (1) the fossil record must produce vast numbers of transitional forms (2) there must be a mechanism to cause all these changes. Where are all the transitional forms between the Precambrian and Cambrian periods?  How well do some of the famous alleged fossil intermediates such as the horse and archaeopteryx hold up to unbiased scientific investigation?  Why mutations and natural selection do not support evolution?