Boiling is when liquids are heated above their boiling point, and if the pressure is reduced, the boiling point is lowered. Given these facts, to make a liquid boil more easily when heat is applied, one should among the following options:
- degrees Celsius
 - Evaporation of water
 - absorb light energy
 - heat is produced
 - aqueous solution
 - lower the surrounding pressure
 - evaporative cooling
 - depress neuronal excitability


 

      lower the surrounding pressure   