The concept of chemical evolution is based on
Crystallization of chemicals
Interaction of water, air and clay under interse heat
Effect of solar radiation on chemicals
Possible origin of life by combination of chemicals under suitable environment conditions
If you go back in the history approx. $4500$ million years back when atmosphere was reducing the organism were
Following are the two statements regarding the origin of life.
$(A)$ The earliest organisms that appeared on the earth were nongreen and presumably anaerobes.
$(B)$ The first autotrophic organisms were the chemoautotrophs that never released oxygen.Of the above statements which one of the following options is correct?
$A$ : Theory of biogenesis explains that life arises from pre-existing life.
$R$ : Louis Pasteur finally disapproved the theory of spontaneous generation of life.