Evan Sewell Wallace, best known by his stage name e-dubble (often stylized E-DUBBLE or shortened to e-dub) (November 1, 1982 - February 13, 2017) was an American rapper from Philadelphia. He was best known for his Freestyle Friday series in which he released a new song each Friday throughout all of 2010, with one final release in 2012.
Parent material is the underlying geological material (generally bedrock or a superficial or drift deposit) in which soil horizons form.arent material is the underlying geological material (generally bedrock or a superficial or drift deposit) in which soil horizons form.
1 Weathering breaks up rock and minerals, changes their chemical composition and characteristics, and also synthesizes a soil from the upper part of the regolith. 2  This unconsolidated material is acted on by the five soil forming factors and soil is formed. Definition: Rock -- an aggregate of one or more minerals. 2  The mineral composition of rocks determine their physical and chemical properties. 3  Igneous rocks-Formed from the solidification of molten rock material. 4  Sedimentary rocks-Formed from sediments.