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
It's Obvious
The first non-cellular form of life could have originated about $. . . . .$ years ago.
Which of the following breakup water into hydrogen and oxygen on early earth?
All of the following conditions were present on early earth, except
