Did Earth's early rise in oxygen help multicellular life evolve?

ScienceDaily
May 18, 2021, 8:54 pm197 pts
Researchers find that oxygenation of Earth's surface is key to the evolution of large, complex multicellular organisms. If cells can access oxygen, they get a big metabolic benefit. However, when oxygen is scarce, it can't diffuse very far into organisms, so there is an evolutionary incentive for multicellular…

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