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Re:The future lifespan of Earth’s oxygenated atmosphere by tabtab on Wednesday March 03, 2021 @05:03PM (#26335312)
For simple life-forms, perhaps, but complex life probably requires rather special or rare circumstances. In areas of Earth low in oxygen, the life-forms there are similar to ediacaran fauna: slow and soft. Increases in oxygen are probably a key cause of the Cambrian explosion.

Perhaps it's possible there is another high-metabolism cycle that doesn't involve much oxygen, but nobody really knows both if a pathway exists, and if evolution can "find" it in time. Any biochemists here who want to weigh in?

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