You are presented with the question "Erosion breaks rocks down from larger parts into what?" and the following answer choices: 
- river
 - ground
 - soil
 - small
 - dirt
 - tiny
 - crust
 - sand

Now knowing that weathering means breaking down rocks from larger whole into smaller pieces by weather and erosion begins with the weathering, or breaking down, of rocks and soil, choose the best answer.


 

   soil      