Which of the following gases was likely NOT abundant in the early Earth's atmosphere?

The first cell like structure was appeared in

In the early earth, organic acids were produced by the combination of ${{\rm{H}}_2}$ with

The concept of chemical evolution is based on

The first enzyme on the primitive earth was/were

Which one of the following amino acid was not found to be synthesized in Miller’s experiment?

According to one of the most accepted theory, the earth atmosphere before any life had originated consists of ${{\rm{H}}_2}{\rm{O}},{{\rm{H}}_2},{\rm{N}}{{\rm{H}}_2}$ and

Theory of special creation arguments that:  I. all living organisms were created as such, II. the diversity was always the same since creation, III. earth is 4000 years old. Choose the right option to complete the given statement

First life on the earth originated from non-living matters has been explained by

What is the significance of coacervates in the origin of life?

Origin of life as a result of chemical evolution has been properly explained by or the most logical biochemical theory of origin of life has been given by