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.

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.