In which era did life originate?

$I.$ Oparin's theory of the origin of life is based on $....A......$
$II.$ The chemical theory of the origin of life was given by $....B......$

Match the following and choose the correct combination from the options given.

Column-$I$	Column-$II$
$A$. Robert Hooke	$1$. Mutation theory
$B$. Charles Darwin	$2$. Swan-necked flask experiment
$C$. Hugo de Vries	$3$. Origin of species
$D$. Louis Pasteur	$4$. Micrographia

After about how many years of the formation of Earth,did life appear on this planet?

Which compound has a very important role in prebiotic evolution?

In their experiment,Urey and Miller mixed $CH_4, H_2, NH_3$,and water vapor in a closed flask and provided electrical energy at a temperature of ........ to simulate primitive atmospheric conditions. (in $^{\circ} C$)