In 1953, S. L. Miller created primitive earth conditions in the laboratory and gave experimental evidence for the origin of the first form of life from pre-existing non-living organic molecules. The primitive earth conditions created include:
1. | low temperature, volcanic storms, an atmosphere rich in oxygen |
2. | low temperature, volcanic storms, reducing atmosphere |
3. | high temperature, volcanic storms, non-reducing atmosphere |
4. | high temperature, volcanic storms, reducing atmosphere containing CH4, NH3 etc. |
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