Answer the following question given this paragraph: 

The solubility of the majority of solid substances increases as the temperature increases. However, the effect is difficult to predict and varies widely from one solute to another. The temperature dependence of solubility can be visualized with the help of a solubility curve , a graph of the solubility vs. temperature (see Figure below ).


Q: As temperature increases, the solubility of the majority of solid substances does what?


A:
increases