You are presented with the quiz "What does the movement of air mass over the world's surface cause?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "the movement of an air mass over Earth 's surface causes local weather changes" and "features of Earth Earth is a rocky world that is still very much alive and active". 

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


 

    local weather changes       