Fact 1: Wind is used for producing electricity.

Fact 2: Differential heating of air produces wind.

Given the two facts above, answer the question "Differential heating of air can be harnessed for what?" with the following options: 
- Animal survival
 - direct energy
 - reducing acid rain
 - Movement of an air mass
 - heat energy
 - running and lifting
 - electricity production
 - faster movement


 

       electricity production  