Contribution of scientist : Louis Pasteur $($ in $1860)$, Oparin and Haldane.
Rejected the theory of spontaneous generation and domstrated that life came from pre existing life.
$\Rightarrow$ Theory of chemical evolution was given them. According them the first form of life came from pre existing non-living organic molecule and chemical evolution was followed by formation of life.
Contribution in chemical evolution in origin of life
The diagram represents Miller's experiment. Choose the correct combination of labelling.