What would we have to do to make water on mars drinkable? Is there water under the surface? Would we be able to make use of that water? Would we be able to make more water than the planets already has? Does the planet have enough water to sustain human life?

Water is collected to compress carbon dioxide gas and pass it over rocks and soil of Mars.

Explanation:

To compress carbon dioxide gas and pass it over rocks and soil of Mars. The gas dissolves and some of the water locked up in the soil clean water which can be collected and stored. There is water present under the surface and present on the surface in the form of ice. Yes, we would be able to make use of that water. Yes, we can produce more water which is present in the air in vapor form. No, mars have very limited water and water in vaporize form which can be turn into liquid form.

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