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Swings In Oxygen Levels May Have Stalled Evolution Of Life On Early Earth - Huffington Post
Swings In Oxygen Levels May Have Stalled Evolution Of Life On Early Earth
But some researchers dispute the central role of oxygen in the advent of animals in the first place, and think that other environmental cues, such as trace metals important for enzyme functions, might still have been needed. Others suspect the ...
So Explaining the Cambrian Explosion Is All About the Oxygen, Is It?