It is called wood to the solid sector of a tree . This element is covered by the Cortex (the surface layer).
Wood is a material of a certain elasticity found in the trunk of the trees. As the growth of these plant species develops through the formation of concentric rings, in the wood it is possible to distinguish several strata.
Behind the Cortex appears on cambium , formed by the phloem and the xylem . The youngest part of the wood is called sapwood , while the heart-known as heartwood - It is the most consistent sector. In the central area, the vegetable marrow , of reduced resistance.
He human being He has always taken advantage of wood in multiple ways. Once the tree is cut and the material is extracted, dried wood can be used as firewood to light the fire; for the production of the pasta or pulp which is intended for the manufacture of paper; or to make endless products.
The uses of wood are so varied that it can be used to manufacture from a plate to a means of transport (as a car or one canoe ), going by tables , chairs and ornaments . Because the characteristics and properties of wood depend on each species , one or another tree is chosen for each case.
According to your hardness , the wood is classified as soft or hard. The softwoods they come from trees that grow fast like conifers, are lighter, break more easily and have a shorter lifespan. The hardwoods On the other hand, they are obtained from trees that grow slowly, are characterized by their density and are very resistant. This makes hardwoods more expensive than softwoods.