- Wood is a 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 that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or 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 themselves. 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, woodchips, or fiber.
- Autonomous communities of Spain (Wikipedia)
In Spain, an autonomous community (Spanish: comunidad autónoma) is the first sub-national level of political and administrative division, created in accordance with the Spanish Constitution of 1978, with the aim of guaranteeing limited autonomy of the nationalities and regions that make up Spain.