Well when I first came up with the question I thought "well the Big Bang Theory is about the explosion, and the expansion of the universe until today, and continuation. Whereas the evolution theory is about natural selection: nature is selecting organisms that have the best adaptations to the environment; and these will be the organisms that will reproduce and pass on their genes to their future generations". But I thought about it more, I realized that the two theories do associate with another in a indirect way. If Big Bang never happened there wouldn't be planets with organisms in them. Also I believe that evolution didn't start on this planet. I believe that organisms arrived here on the planet billions years ago on meteorites. That meteorites may have transferred these organism through space. Beyond that I think that big bang created chemicals needed for organisms such as carbon. I believe that evolution started with the big bang, and even though it may be two different theories, and two different concepts, they are related.
