Fact 1: Uneven heating of the Earth 's surface cause wind.

Fact 2: Geothermal heat is warm heat.

Given the two facts above, answer the question "What does uneven warming of the Earth's surfaces cause?" with the following options: 
- Winter
 - harm
 - wind
 - sweat
 - Injury
 - SNPs
 - force
 - warmth


 

   wind      