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We will learn the evidence of Mar’s wet past is North and South Poles combined contain enough frozen water to cover the entire surface of Mars with 20-35m (60-100ft) of water and many other evidence. (Part 1, evidence 9-20)

Previous video in this series can be seen at:
https://youtu.be/TOJnyo3RObA
Next video in this series can be seen at:
https://youtu.be/EVugoCoE-OE