When did the Earth reach oxygen levels sufficient to support animal life? Researchers have discovered that a rise in oxygen levels occurred in step with the evolution and expansion of complex, eukaryotic ecosystems. Their findings represent the strongest evidence to date that extremely low oxygen levels exerted an important limitation on evolution for billions of years.
Title: What the rise of oxygen on early Earth tells us about life on other planets
Sourced From: www.sciencedaily.com/releases/2022/01/220131161546.htm
Published Date: Mon, 31 Jan 2022 16:15:46 EST
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