Cosmic Evolution Evolution (124 MCQs) Evolution Biology - XII NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

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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