You are presented with the question "What forms due to unequal heating of Earth's surface by the Sun?" and the following answer choices: 
- rays or beams
 - hurricanes
 - power stations
 - It expands
 - climate
 - The atmosphere
 - an object
 - energy barrier

Now knowing that unequal heating of Earth 's surface by the Sun causes global wind patterns and winds of 74 mph are the standard for a hurricane, choose the best answer.


 

  hurricanes       