Mystery of how early animals survived ice age

How did life survive the most severe ice age? A team has found the first direct evidence that glacial meltwater provided a crucial lifeline to eukaryotes during Snowball Earth, when the oceans were cut off from life-giving oxygen, answering a question puzzling scientists for years.

Source: Mystery of how early animals survived ice age: New findings further our understanding of extreme climate change and evolution — ScienceDaily

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