Primordial sea

Abiogenesis (British English: /ˌeɪˌbaɪoʊˈdʒɛnɪsɪs, -ˌbaɪə-/, /-ˌbiːoʊ-, -ˌbiːə-/), biopoiesis, or informally the origin of life, is the natural process by which life arises from non-living matter, such as simple organic compounds. On Earth, the transition from non-living to living entities was not a single event but a gradual process of increasing complexity. Abiogenesis is studied through a combination of paleontology, chemistry, and extrapolation from the characteristics of modern organisms, and aims to determine how pre-life chemical reactions gave rise to life on Earth.

The study of abiogenesis can be geophysical, chemical, or biological, with more recent approaches attempting a synthesis of all three, as life arose under conditions that are strikingly different from those on Earth today.

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