Army Award for. Maintenance Excellence. The Army Award for Maintenance Excellence award winner displays an expertise and professionalism in performing their tasks. Each unit is evaluated on their effectiveness in ensuring that Soldier competency is maintained.
The pedosphere is the outermost layer of Earth's continental surface and is composed of soil and subject to soil formation processes. It exists at the interface of the lithosphere, atmosphere, hydrosphere and biosphere. The total arable land is 10.9% of the land surface, with 1.3% being permanent cropland.
geosphere, lithosphere-the solid part of the earth consisting of the crust and outer mantle. crustal plate, plate-a rigid layer of the Earth's crust that is believed to drift slowly. sial-the granitelike rocks that form the outermost layer of the earth's crust; rich in silicon and aluminum.sima-rock that form the continuous lower layer of the earth's crust; rich in silicon and magnesium. 1  Facebook.arth's crust-the outer layer of the Earth. crust. layer-a relatively thin sheetlike expanse or region lying over or under another. asthenosphere-the lower layer of the crust.