Cosmic Evolution Essentiale: Evolution 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, NEETprep,neet questions, neet practice questions, neet practice paper,neetprep, neetprep practice questions, mock test neet, neet physics questions, neet mcq, neet questions with answers, neet questions with explanations,NEET attempt,NEET test series, AIIMS Delhi preparation,NEET rank rewards, NTA level NEET questions, NEET online coaching,physicswallah neet, physicswala neet,allen neet, akash neet, physics online course, chemistry online course,biology online course, zoology online course, botany online course, Aryan Raj Singh NEET course

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 |

77%

Level 2: 60%+

Hints