Fact 1: Erosion causes deposition.

Fact 2: Desertification implies soil erosion.

Given the two facts above, answer the question "Desertification implies what?" with the following options: 
- contamination
 - dry conditions
 - permineralization
 - soil deposition
 - Decrease bodily water
 - humans disturb it
 - population movement
 - threatened


 

    soil deposition     