Study suggests complex life was present on Earth 2.33 billion years ago

Study suggests complex life was present on Earth 2.33 billion years ago

An exhaustive genetic analysis of modern-day organisms has revealed new insights into Earth's earliest forms of complex life. The findings, reported by MIT earth scientists today in Nature, suggest that eukaryotes - the domain of life comprising animals, plants, and protists - were present on Earth as early as 2.33 billion years ago, right around the time when oxygen became a permanent fixture in the atmosphere.

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