In the 1960s, scientists developed a revolutionary theory called plate tectonics. Plate tectonics holds that the lithosphere, a layer of rigid material composed of the outer crust and the very top of the mantle, is divided into seven large plates and several more smaller plates. This sort of magma production is called subduction zone volcanism. 2  If the plates collide and neither plate can subduct under the other, the crust material will just crumple, pushing up mountains. 3  This process does not produce volcanoes.
The common causes of atrophic kidney fall into three distinct categories â congenital renal dysplasia, end stage kidney disease and chronic pyelonephritis. Congenital renal dysplasia This is brought about when there is a low blood supply during the embryonic period due to obstruction or other reason.
Muscle atrophy can also happen if you are bedridden or unable to move certain body parts due to a medical condition. Astronauts, for example, can also experience some muscle atrophy after a few days of weightlessness. Other causes for muscle atrophy include: lack of physical activity for an extended period of time. aging. alcohol-associated myopathy, a pain and weakness in muscles due to excessive drinking over long periods of time. burns. injuries, such as a torn rotator cuff or broken bones. malnutrition.