You are presented with the quiz "unequal heating of Earth 's surface by the Sun causes a distortion of the what?" 

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 "wind causes a distortion of the water application pattern". 

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


 

 water application pattern          