You know me Chakka - I always widen the question. If we're talking about life on earth, then it's feasible that it evolved from a combination of the necessary chemicals. However, if we're talking about the creation of the universe, we have to ask where those chemicals came from. We can go back as far as we like, but in the end (or in the beginning(?)), there is no answer, because nothing comes from nothing.
(ps How are you getting on with the quiz? I have 15 to get - and still no calf!!).