The GRUMP overestimation is illustrated by the following. GRUMP places the total of all urban extents in the United States at 754,000 square kilometers, more than three times the 240,000 square kilometers reported by the Bureau of the Census in 2000.This is despite the fact that GRUMP uses the same urbanization criteria as the Bureau of the Census.he GRUMP overestimation is illustrated by the following. GRUMP places the total of all urban extents in the United States at 754,000 square kilometers, more than three times the 240,000 square kilometers reported by the Bureau of the Census in 2000.
Other Causes. Below are brief descriptions of other causes of mobility impairments. Amputation is the removal of one or more limbs, sometimes caused by trauma, malignancies or other conditions. Arthritis is the inflammation of the body's joints, causing pain, swelling and difficulty with mobility. Back disorders can limit a student's ability to sit, stand, walk, bend, or carry objects.
What Is Bellâs Palsy? Bellâs palsy is a condition that causes a temporary weakness or paralysis of the muscles in the face. It can occur when the nerve that controls your facial muscles becomes inflamed, swollen, or compressed. The condition causes one side of your face to droop or become stiff.