You are presented with the question "Water and time can work together to create what?" and the following answer choices: 
- a wave
 - canyon
 - matter
 - heat
 - soils
 - mercury
 - iron
 - desert

Now knowing that most canyons are formed by flowing rivers through erosion over long periods of time and erosion is the work of wind, water, and time, choose the best answer.


 

  canyon       