4.37-4.20 billion years ago : The loss of the primordial continent and the generation of a strong geomagnetic field. The first proto-life, born in a natural nuclear geyser, was periodically splashed onto the Hadean surface environment, where they evolved into the second stage of proto-life which utilized solar energy to survive. However, they perished once exposed to the toxic ocean. Finally, after repeated mass extinctions, the third stage of proto-life emerged: the first prokaryote and ancestor of animals and plants which could survive the external environment such as toxic ocean.