compacted soil
101Dune — For other uses, see Dune (disambiguation). Erg Chebbi, Morocco …
102Raised bed gardening — is a form of gardening in which the soil is formed in 3–4 foot (1.0–1.2 m) wide beds, which can be of any length or shape. The soil is about raised above the surrounding soil (6 inches to waist high), sometimes enclosed by a frame generally made… …
103Apollo Moon Landing hoax conspiracy theories — are claims that some or all elements of the Apollo Moon landings were faked by NASA and possibly members of other involved organizations. Some groups and individuals have advanced various theories which tend, to varying degrees, to include the… …
104Wood fuel — is wood used as fuel. The burning of wood is currently the largest use of energy derived from a solid fuel biomass. Wood fuel can be used for cooking and heating, and occasionally for fueling steam engines and steam turbines that generate… …
105Loam — is soil composed of sand, silt, and clay in relatively even concentration (about 40 40 20% concentration respectively), considered ideal for gardening and agricultural uses. Loam soils generally contain more nutrients and humus than sandy soils,… …
106Crushed stone — 20 millimetre crushed stone, for construction aggregate and landscape uses. Crushed stone or angular rock is a form of construction aggregate, typically produced by mining a suitable rock deposit and breaking the removed rock down to the desired… …
107clay mineral — any of a group of hydrous aluminum silicate minerals, as kaolinite, illite, and montmorillonite, that constitute the major portion of most clays. [1945 50] * * * Any of a group of important hydrous aluminum silicates with a layered structure and… …
108geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …
109tilth — /tilth/, n. 1. the act or operation of tilling land; tillage. 2. the state of being tilled or under cultivation. 3. the physical condition of soil in relation to plant growth. 4. land that is tilled or cultivated. [bef. 1000; ME, OE. See TILL2,… …
110Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
