You are presented with the question "where does the movement of an air mass cause local weather changes?" and the following answer choices: 
- outer space
 - mechanical
 - coastlines
 - our planet
 - global warming
 - The atmosphere
 - the sun
 - h2o

Now knowing that the movement of an air mass over Earth 's surface causes local weather changes and earth is our planet, choose the best answer.


 

    our planet     