During the origin and evolution of life, key biological compounds were progressively synthesised in ocean with the help of enery obtainable from

During the origin and evolution of life, key biological compounds were progressively synthesized in ocean with the help of energy obtainable from

During chemical evolution, key biological compounds were synthesised

Which compounds were formed in the direction of the origin of life:

Organic compounds evolved on earth and required for origin of life were

In present times the origin of life is not possible from inorganic compounds due to :

In present times the origin of life is not possible from inorganic compounds due to :