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For the stability of the organic compounds, Oparin opined that, probably:

1.	UV radiation never reached the surface of the primeval Earth
2.	the primeval Earth was in a molten state
3.	the primeval Earth atmosphere was reducing rather than oxidizing
4.	plenty of energy sources were available for chemical reactions to occur

Subtopic: Definition & Types of Evolution | Cosmic Evolution | Examples of Chemical Evolution |

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