What are the main stages in the emergence and development of life on Earth?

There are many hypotheses trying to explain the origin and development of life on our planet. And although they offer different approaches to solving this problem, most of them suggest the presence of three evolutionary stages: chemical, prebiological and biological evolution. At the stage of chemical evolution, abiogenic synthesis of organic polymers took place. At the second stage, protein-nuclein-lipoid complexes were formed (scientists called them differently: coacervates, hypercycles, probions, progenotes, etc.) capable of orderly metabolism and self-reproduction. As a result of prebiological natural selection, the first primitive living organisms appeared, which entered into biological natural selection and gave rise to the whole diversity of organic life on Earth.

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