Formation of which complex molecules was noticed by Urey and Miller when they subjected substances like $N{H_3},C{H_4},{H_2}O$ etc. to electric discharge
Aquaregia
${H_2}S{O_4}$
$HCN$
Amino acids
Stanley Miller $(1950)$ was successful in synthesizing
Which of the following breakup water into hydrogen and oxygen on early earth?
Which was absent in the atmosphere at the time of origin of life?
The first non-cellular form of life could have originated about $. . . . .$ years ago.