Things don't appear on their own. (Science) Things don't happen without a reason.(Science)
Unless you can explain why life has occurred? (Science?)
From Darwin's travels?
Abiogenesis if it happened would just be chemistry, nothing on it's own, unless you count all chemicle reactions as just happening on their own. Abiogenesis would simply be chemicles in the right place/right time coming together. No more a miracle then every time hydrogen and oxygen becoming water a miracle.
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