Explanation:
<em><u>Reverse Osmosis is a technology that is used to remove a large majority of contaminants from water by pushing the water under pressure through a semi-permeable membrane</u></em>
Depends
if they can find an oasis then yes but only for a certain amount of time
if they cant then no they will eventually starve or thirst to death in the Sahara.
so i would say.... A. true
Hoped that helped ;)
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I don't like to leave comments that aren't the answer, but I think you should provide a bit more context like, perhaps, a list of activities or the name of an organism.