SUPPLY CHAIN DEFINITIONS. Definitions of a supply chain virtually universally encompass the following three functions: i. supply of materials to a manufacturer; ii. the manufacturing process; and, iii. the distribution of finished goods through a network of distributors and retailers to a final customer.
The thickest parts are under the continents and the thinnest parts are under the oceans. Crust. Earth's crust is made up of several elements: oxygen, 47 percent; silicon, 27 percent; aluminum, 8 percent; iron, 5 percent; calcium, 4 percent; magnesium, potassium and sodium, 2 percent. The crust is divided into huge plates that float on the mantle, the next layer.
The eight most common elements in the Earth's crust are as follows (with percentages): Oxygen (O) 46.6% Silicon (Si) 27.7% Aluminum (Al) 8.1% Iron (Fe) 5.0%Calcium (Ca) 3.6% â¦Sodium (Na) 2.8%Potassium (K) 2.6%Magnesium (Mg) 2.1%. 5 people found this useful.