separate salt water from fresh water?

Question

how do you separate salt water from fresh water

Answer 1

This is a tricky question, as you cannot differentitate between the 'salt water" and the "fresh water" once they are mixed.
However you can do Osmosis, so that the membrane will separate out water without any salt (could be termed as fresh water) while the remaining water will have dissolved salt (could be termed as salt water)

Answer 2

Distillation my dear. You need to make a collection unit over a pot of boiling water and collect the steam to drip down into another beeker to have the distilled water leaving the salt behind.

Answer 3

Reverse Osmosis.