When seawater evaporates, the concentration of salts increases until which of the following occurs? a- the salts floatb- the salts precipate out of solution c- the salts condensed- none of the above

When the sea water evaporates,   the concentration of salts increases until it precipitates out. This is because, the water has reached a saturation state whereby it cannot dissolve any more solutes. As a result, the excess solutes   tend to dissolve out and form very small crystals which becomes bigger as the concentration increases.

"a.) well–developed vascular system."