Fact 1: Boiling is when liquids are heated above their boiling point.

Fact 2: Boiling point is also affected by pressure.

Given the two facts above, answer the question "liquids heated are affected by" with the following options: 
- forces
 - movement
 - voltage
 - climate
 - heat
 - Evaporation
 - pressure
 - salinity


 

       pressure  