true or false
1. rickets are common disorder in the jiont that characterized by infalmmation of the fingers and joints the body.
2. Arthritis is a common disorder caused by the thinning and weakening of bones usually experienced by elderly people
3. Polio is acute infection caused by a virus attacks the nerve cell of the brain and spinak cord resulting to paralysis
4. Sclliosis it is excessed sideways curvative of the sine stomach, esophagus, diaphragm and walls of the blood vessels.