HM-TM: I've often wondered why it is that those who believe in evolution claim that life started from non-living material but refuse to back that up. It's a mystery to me. They claim something they have no proof of. Unheard of!
You're talking about abiogenesis not evolution.
FYI, the current models for abiogenesis are not proven theories (yet). They are hypotheses. Science doesn't claim that the current ideas of abiogenesis are fact. There have been some experiments that show promise that the concept is plausible, but there is not at this time conclusive proof that the hypotheses are theory.