You are presented with the quiz "Global wind patterns are driven by " 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "unequal heating of Earth 's surface by the Sun causes global wind patterns" and "low latitudes, for instance, receive more heat during the day than stations at high latitudes". 

So, what's the best answer to the question?


 

       unequal warming of the Earth's    