What process might have caused the first cells to spontaneously generate over a very long period of time?

The process that happens in the given statement above is the chemical evolution. The chemical evolution allows cells to generate where as when time prolongs or goes on, complex molecules are being created in which they came from simple molecules. They are being created because of the reactions that occur chemically, generating or evolving them as time goes by.

Although Avicenna made advances in pharmacology and in clinical practice, his greatest contribution was probably in the philosophy of medicine. He created a system of medicine that today we would call “holistic” and in which physical and psychological factors, drugs, and diet were combined in treating patients.

Explanation:

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