You are presented with the question "What can be the cause of lakes and ponds forming?" and the following answer choices: 
- beavers
 - heat
 - Pesticides
 - flooding
 - erosion
 - rainfall
 - loose soil
 - spring

Now knowing that damming a river can cause a lake to form and beavers build dams that create ponds, choose the best answer.


 

 beavers        