Okay do you believe that spontaneous generation is a real thing? If you don't know what that is.. it's basically the theory that life can come from non-life. Example: A leaf turning into a frog, or something of that sort. Before you go saying "That's completely ridiculous, no way!" Think about The Big Bang, if you believe it actually happened. That's one form of spontaneous generation, therefore you would believe it to be real (if you believe that it happened).