Namenda XR. Uses. Memantine is used to treat moderate to severe confusion (dementia) related to Alzheimer's disease. It does not cure Alzheimer's disease, but it may improve memory, awareness, and the ability to perform daily functions.
The lithosphere, which is the rigid outermost shell of a planet (the crust and upper mantle), is broken up into tectonic plates. The Earth's lithosphere is composed of seven or eight major plates (depending on how they are defined) and many minor plates.
Because of these differences, tectonic plate boundaries are grouped into three main types. Use the map below to see where the three different types of plate boundaries are found throughout the world. First, find the KEY in the green box located in the lower right-hand corner of the map.