The evolution answer is time and chance/trial and error. Before I got saved I believed in the religion of evolution. People barely understand the number 1000 let alone the enormous numbers involved in evolutionary probability so they just believe what they don't understand.
So I watched an evolution video by J Bronowski(sp) about how termites could develop radio telescopes over time if needed. I believed like the little evolution disciple that I was.
But there's no "religion" in evolution, just the opposite.
Like all of natural-science, evolution requires no truth, no belief, no faith and certainly nothing supernatural.
What we can observe science calls facts, explanations for facts are hypotheses which if strongly confirmed become theories, and that's all there is.
So, if you make evolution into some sort of religion, the it is by all definitions a false one.