Wind is used for producing electricity.
Wind is caused because of pressure differences in the atmosphere.
Something caused by pressure differences in the atmosphere is used for producing electricity.
What can be used to produce electricity?

- 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