Abiogenesis

Abiogenesis (/ˌeɪbaɪ.ɵˈdʒɛnɨsɪs/ AY-by-oh-JEN-ə-siss) or biopoiesis is a natural process by which life arises from simple organic compounds. The earliest known life on Earth existed between 3.9 and 3.5 billion years ago, during the Eoarchean Era when sufficient crust had solidified following the molten Hadean Eon.