You are presented with the question "What can be caused by wind erosion?" and the following answer choices: 
- Water expanding
 - Pollution
 - Sand dunes
 - an object
 - deforestation
 - flooding
 - patch reefs
 - detritus

Now knowing that sand dunes are formed by the wind transporting and depositing sand and wind erosion is the movement and deposition of soil particles by wind, choose the best answer.


 

   Sand dunes      