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

Fact 2: Boiling water can cause burns.

Given the two facts above, answer the question "What can cause burns?" with the following options: 
- Heating water
 - fossil fuels
 - Electrical energy
 - the skin
 - Tepid water
 - insults
 - Freezing water
 - heating liquids


 

 Heating water        