Wood plants trees important in our house

 

Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic material a natural composite of cellulose fibers which are strong in tension embedded in a matrix of lignin which resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees or it is defined more broadly to include the same type of tissue elsewhere such as in the roots of trees or shrubs. In a living tree it performs a support function enabling woody plants to grow large or to stand up by them. It also conveys water and nutrients between the leaves other growing tissues and the roots. Wood may also refer to other plant materials with comparable properties and to material engineered from wood or wood chips or fiber. Wood has been used for thousands of years for fuel as a construction material for making tools and weapons furniture and paper and as a feed stock for the production of purified cellulose and its derivatives, such as cellophane and cellulose acetate. People have used wood for millennia for many purposes, primarily as a fuel or as a construction material for making houses, tools, weapons, furniture, packaging, artworks, and paper. Wood to be used for construction work is commonly known as lumber in North America. Elsewhere, lumber usually refers to felled trees and the word for swan planks ready for use is timber. In Medieval Europe oak was the wood of choice for all wood construction including beams, walls, doors, and floors. The chemical composition of wood varies from species to species, but is approximately 50% carbon, 42% oxygen, 6% hydrogen 1% nitrogen and 1% other elements mainly calcium, potassium, sodium, magnesium, iron, and manganese by weight. The growing demand for responsibly sourced wood products that store carbon can be met with an increase in well-managed forests and plantations on marginal or cleared land. Wood construction is fast and efficient. Wooden buildings can be built year round in most climates. Wood is naturally beautiful and aesthetically pleasing.