Fact 1: Evaporation can be used for separating a solute from a solvent in a solution.

Fact 2: Heating liquids is also made easier by allowing saturated gas to reduce evaporation.

Given the two facts above, answer the question "What can be used to separate a solute from a solvent in a solution?" with the following options: 
- flow of electrons
 - Dehydration
 - heat energy
 - heating liquids
 - a hydraulic system
 - water vapor
 - kinetic energy
 - Time and energy


 

    heating liquids     