Question

Adina is stranded on an island in the middle of the ocean. There is one stream on the island but the water has lots of sand in it. Which technique should she remove the sand from the water?

Answer 1

she can remove the sand , using a shovel , but that will be hard ..
eventually the stream will carry off the silt and the sand . thus she doesn't have to do anything , but to wait ..

Answer 2

Adina removed the sand, employing a shovel, however she be laborious and therefore the stream will carry off the silt and therefore the sand.

She does not have to be compelled to do something, however to attend.

You fill the metal pot with ocean water and boil the water, the water can turn out to be steam and can move upwards, there you would like to dam the steam victimization the long metal plate, so the steam condenses into pure water droplets.

The metal plate must be inclined so the droplets flow downwardly and at last falls into a clean pot.

Finally you get the water within the clean pot.