Life

Life on Earth appeared in the form of simple unicellular organisms, evolving from prokaryotic forms to more complex cells (eukaryotes) and then to multicellular organisms, gradually enriching the atmosphere with oxygen through photosynthesis and diversifying into the vast biodiversity we know today, from mollusks to humans. Life on Earth originated through a process called abiogenesis, in which non-living matter gradually transformed into increasingly complex living systems. The first organic molecules are thought to have formed in energy-rich environments, such as underwater hydrothermal vents or hot mineral-rich water pools.