You are presented with the question "What means breaking down boulders by weather?" and the following answer choices: 
- vehicles
 - weathering
 - erosion
 - mechanical
 - flooding
 - earthquake
 - hurricanes
 - tremors

Now knowing that weathering means breaking down rocks from larger whole into smaller pieces by weather and massive boulders and tiny rocks influence the sound and path of water, choose the best answer.


 

  weathering       