Fact 1: Wind is used for producing electricity.

Fact 2: Wind is caused because of pressure differences in the atmosphere.

Given the two facts above, answer the question "What can be used to produce electricity?" with the following options: 
- Something that generates electricity
 - an automobile engine
 - The bending of a ray of light
 - Something caused by pressure differences
 - that material's properties
 - energy of moving objects
 - series of enzyme-mediated reactions
 - Faulting of rocks in the crust


 

    Something caused by pressure differences     