Fact 1: Heating salt water causes the water to evaporate while the salt remains.

Fact 2: For example, in salt water, salt is the solute and water is the solvent.

Given the two facts above, answer the question "What is left over when salty water is heated?" with the following options: 
- Time and energy
 - nutrients
 - Sediment
 - energy
 - bacteria
 - Energy.
 - loose soil
 - The solute


 

        The solute 