Hello Grip
You've asked what have the potential to be two very involved questions <chuckles.> I will attempt to answer them as briefly as possible, and include links to further information when it is possible.
Regarding the concept of evolution, the fact that there is a divergence of species in no way supports this theory. A valuable website for basic questions such as this, I have found, is
Answers in Genesis. They also cover more in depth queries.
Briefly, a "kind" such as a human, a fish, or even a man, has a very complex genetic makeup, and it was moreso at the creation. We do not deny that since the creation, there have been changes. When groups of people or animals separate (such as to a different continent) and breed within their group, different genes become prominent while others become less prominent in that group.
Likewise, animals such as show dogs are often bred on this principle of genetic makeup and "good genes." The reason that evolution has no place in this whatsoever is that divergence of species comes from the mutation (i.e. change) or loss of genetic makeup - never can a mutation in DNA introduce *new* information into the pool. In other words, species variation is an example of lost or changed genes, not entirely new information suddenly arising or evolving, as evolution theorizes.
For example, you may selectively breed a wolf into a lapdog by taking the runt of each litter - you can never breed that lapdog back into a wolf. The information is gone, and no matter how many "millions of years" you may wait, it will never return of itself. Because it cannot be demonstrated or found anywhere that *new* information is formed in the DNA as opposed to previous information being lost or damaged, evolution is not a scientific nor biblical approach to the matter.