a way to turn saltwater into drinking water.
Step 1: Materials
Step 2: Finish the Construction
next put the plastic wrap on the top a little loose and put the rubber band on the edges. then put the rock in the middle above the glass.
Step 3: Wait
wait as long as you want, set it directly in sunlight ,just observe what happens after about a half hour, the the water starts to collect on the top. when you want, open it and taste the water.