Fact 1: The vanes rotating in an electric fan causes air to move.

Fact 2: Air is mostly nitrogen and oxygen.

Given the two facts above, answer the question "what moves because of vanes rotating in an electric fan?" with the following options: 
- nitrogen and oxygen
 - sun rays
 - microwaves
 - some mammals
 - living things
 - animals with backbones
 - kinetic energy
 - neutrons


 

 nitrogen and oxygen        