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.
Earthâs outer layer is the lithosphere, which is a cool, rigid layer that includes the crust and the upper part of the mantle. The lithosphere is divided into pieces called tectonic plates. Below the lithosphere is the asthenosphere, which is a layer of the mantle that is made of very slow-flowing solid rock.elow the asthenosphere is the mesosphere, which is the lower part of the mantle. The mesosphere flows even more slowly than the asthenosphere. Figure 2 The Physical Structure of Earth Earthâs core has two layers. The outer core is a layer of liquid iron and nickel.