Fact 1: Erosion causes a river to become deeper and wider.

Fact 2: Clearing of land can lead to erosion of soil into the river.

Given the two facts above, answer the question "what makes a river wider?" with the following options: 
- rainfall
 - salinity
 - arteries
 - flow of electrons
 - Water expanding
 - Physical weathering
 - a hydraulic system
 - clearing land


 

        clearing land 