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.
Earth's outer shell. Earth's lithosphere is the outer shell of the planet. It contains the crust and the upper part of the mantle. The crust is made of primarily of granitic rocks. The upper mantle rocks peridotite, which contains more iron and magnesium minerals that granitic rocks.