The vanes rotating in an electric fan causes air to move, and an electric fan makes 180 revolutions per minute. Given these facts, what with the vanes rotating causes air here to move among the following options:
- It reaches the dew point
 - heat to cooler objects
 - whale movement
 - it flows to a lower level
 - Earth's axis of rotation is tilted
 - vanes on submarins
 - Martian winds rotating.
 - 180 revolutions per minute.


 

        180 revolutions per minute. 