It is conceptualized as an orthotropic, hard and fibrous material with which the trunks of trees developed over the years are formed, forming concentric rings corresponding to the different growth of biomass according to the seasons, covered by a protective bark made up of cells linked with lignin that are they are dying. Plants that do not produce wood are known as herbaceous.
Once cut and dried, the wood is used for different purposes and different areas such as: manufacture of pulp or pulp, raw material to make paper, feed the fire, in this case it is called firewood and is one of the simpler ways of using biomass. It is also used for engineering, construction and carpentry, medicine, means of transport (Basques and carriages).
Wood is classified into types: white wood (from fast-growing trees), Hardwood (from slow-growing trees), Resinous wood (specifically resistant to moisture), Fine wood (used for artistic applications), Precast wood (They are made with remains of wood, whether they are shavings). Depending on the length of its fibers, wood can be classified into long-fiber woods and short-fiber woods. In addition, wood is a thermal and electrical insulator, a good conductor of sound (acoustic), it is a renewable, biodegradable and recyclable material, useful, malleable and tenacious. Its color is due to salts, colorants and resins. The darkest ones are resistant and durable, their textureIt depends on the size of the pores, the veins are due to the orientation and color of the fibers, the density is lower than that of water, which allows them to float.
