Why is that water is needed to live as opposed to alternative liquids? If coffee is just bean-flavoured water, why couldn’t you survive by only drinking coffee? If you were lost on a desert island and had only coffee, juice or soda to drink, could you survive?
In: Biology
To add to the discussion: dilute coffee is mostly water so you’d be ok, but on a hot desert island you’d be sweating out mineral salts and the loss of those would be a problem too. If you were able to make a water distiller with a pot, lid and copper tube, say, or collect evaporated water from a pit and plastic sheet, you’d make pure water but you’d need to add a little bit of sea water to it to keep up your intake of vital mineral salts.
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