required "Why?" is guilty of ignorance and deserves a consequential strict scientific condemnation, as science rightfully should, on behalf of the currently established scientific tenets of evolutionary science (consisting cosmological and chemical evolution, along with biological). Evolution and Christianity cannot co-exist. Only the scientifically illiterate (except in the rare case of Collins and a few others who have all been soundly refuted) and ignorant can hold to Christian belief together with evolution (a concealed form of religious belief). For it is the same as ratifying and promoting Christianity and Scientology amiably with one another. Additionally, while there is no definite answer, there are plausible and convincing answers as to what transpired to produce the "Big Bang," (National Academy of Sciences, Singh, Dawkins and other notable pioneers and supporters cling to Big Bang theory) which is the critical constituent prior to the inception of evolution (be it any type of the theory of evolution, yet excepting micro-evolution preemptive for Creation Theory) in Evolutionary Theory. As the Big Bang and Theory of Evolution are not mutual, that is, Big Bang is not prerequisite of the Theory of Evolution; this follows to say that despite the seclusion of the Big Bang, it is a naturalistic process that happens throughout life, and no form of theistic Christian belief (theism cannot account for, or compromise evolution) is sanctioned. Evolution is caused by triggers in genes. Different animals have different triggers. These triggers can be caused by varying circumstances, but most commonly a change in habitat.