You are presented with the question "What means that rocks are eroded down again?" and the following answer choices: 
- flooding
 - rainfall
 - salt and water.
 - weathering
 - freezing
 - chilling
 - frosting
 - mines

Now knowing that weathering means breaking down rocks from larger whole into smaller pieces by weather and erosion breaks the rock down again, and the cycle continues, choose the best answer.


 

    weathering     