God spoke, and it was. If you're looking for the scientific, naturalist explanation for the mechanism, it doesn't exist. Such are the limits of science. Darwinism is the best explanation for the diversity of life, having taken God out of the equation. But many of us are not convinced that it is necessary to take God out of the equation, and that certainly the Darwinists haven't given a compelling reason to take God out. I respect science, but I accept the more humble perspective that science hasn't explained everything, and may never explain everything.
So do you believe in the Judaeo-Christian account of "God Spoke, and it was" or the Native American account, or early Celtic accounts of Odin and Thor, or the Hindu account?
And if you believe in the Judaeo-Christian account of the creation, do these beliefs come from a 6,000 year old collection of books from various sources around the Middle East and Mediterranean?
And do you believe god gave man logic?