Wood is the hard, fibrous substance found beneath the bark in trees, shrubs, and other similar plants. It is a result of the secondary growth processes of these plants. The cambium layer (the region between the xylem and phloem in vascular plants) divides to produce various new tissues in a process that results in secondary thickening. This increases the girth of the tree by the production of the new wood. Wood is actually a very complex organic material made of a variety of carbohydrates, lignin, inorganic materials, and other organic materials. Wood has and still continues to be used in the construction industry and in the manufacture of pulp and paper.Charcoal i s produced from wood by slow combustion in a low supply of oxygen. Charcoal can be used as a fuel by burning it in excess oxygen, as a reducing agent in industrial chemistry, and it...