Explain how those chemicals got dispersed and placed in the right places.<quoted text>
Your kind are the ones saying "a little pool of ooze."
Start with the earth accreting and how those chemical came to be. Geological processes or whatever to produce and distribute in such a fortunate way. And how the change of seasons and orbital precession kept the thermal, radiation, and other environmental conditions within the proper range for this process to happen and be maintained.
No maybes or couldas. Those are beliefs, not facts.