Leukocytes are produced/stored in thymus, spleen, and bone marrow
Muscular dystrophy is a muscle disease that causes a loss in muscle mass and weakness. Patients with muscular dsytrophy may experience a weakening in their cardiac muscles, causings heart malfunction. Muscular dystrophy can also deteriorate the diaphragm, a muscle that solely aids in respiration, causing a breathing malfunction.
The first answer is volcanoes
The second answer is They move because of convection currents in the mantle
