What are two factors that can be changed to decrease soil?

one factor that could change to decrease soil is water. Another factor that could be changed to decrease soil is Decay.

Explanation:

Water, because in time the water will submerge the land causing there to be less dirt and land altogether. Decay, because everything will eventually decay one way or another because the only thing that keeps dirt moisturized is water and we will eventually run out of that and everything around us will also start to decay. Even us and other living things such as plants, animals, and insects.