You would have to start a fire and boil the water
Simple. Let the water heat in the light of the sun. It's a desert island.
A desert island is uninhabitable, principally because there is no source of potable (fresh) water. No one lives on a desert island, so there are no homes.
To survive on a desert island, you could eatCoconuts (Also drink the milk)Fish/crabs/shrimpsFruitMeat- Bears etcWhat ever you do, don't drink sea water find clean water
A small body if fresh water in the middle of the desert is known as an oasis.
Sand, rock, soil, water, air - are all nonliving things found in a desert.
That is not part of the island quest.
*food *water
They can't, it's much too big to do anything with. But the way to reclaim desert is to cultivate it, grow things on it, but that needs water, and the desert is there because there is no water.
They made crops on the water and they made aquaducts to bring clean water.
Water, and the brain power to use the resources that you find.
Sand, soil, gravel, rocks, water, air - all are abiotic (nonliving) factors in a desert.
Abiotic factors of a desert include soil, sand, gravel, rocks, water, light and air.