The conditions of the earth atmosphere conducive for the origin of life were:
A. Presence of high temperature, CH4, NH3, and O3
B. High temperature, CH4, NH3, volcanic eruption
C. High temperature, volcanic eruption, O2, NH3
D. Volcanic eruption, CH3, NH3and O2
It was suggested by Heldane and Oparin, and experimentally proved by Urey and Miller that in the very starting atmosphere was reducing in nature.
It consisted of NH3, H2, CH4 ,the temperature was very high.
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