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2019 December 17
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What did Earth look like 750 Mya?
Cryogenian Period. Glaciers may have covered the entire planet during the greatest ice age known on Earth. Different types of single-celled organisms such as green algae appear for the first time.
Cryogenian Period. Glaciers may have covered the entire planet during the greatest ice age known on Earth. Different types of single-celled organisms such as green algae appear for the first time.
