Fact 1: Unequal heating of Earth 's surface by the Sun causes global wind patterns.

Fact 2: Unequal absorption of radiation causes unequal heating of the earth's surface.

Given the two facts above, answer the question "What are global wind patterns caused by?" with the following options: 
- Global cooling
 - electromagnetic energy
 - Global warming
 - exposure to cold
 - Equal radiation absorption
 - Greenhouse gasses
 - Greenhouse gases
 - Unequal radiation absorption


 

        Unequal radiation absorption 