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My study aid of Word War II

My study aid of Word War II

Liquid h2o are not able to exist on the surface area of Mars due to low
atmospheric pressure, besides at the lowest elevations for small intervals. The two roman policier ice caps appear to be produced mostly of drinking water.
The quantity of water ice in the south polar ice cap, if melted, would be
sufficient to cover the complete planetary surface to a depth of 11
meters. A permafrost mantle stretches from the pole to latitudes of about 60°.