Although an infant's color vision is not as sensitive as an adult's, it is generally believed that babies have good color vision by five months of age. Most babies start crawling at about 8 months old, which helps further develop eye-hand-foot-body coordination.
A language tree, or family tree with languages substituted for real family members, has the form of a node-link diagram of a logical tree structure. Such a diagram contains branch points, or nodes, from which the daughter languages descend by different links.
forest-and-tree model. The forest-and-tree model is a logical structure for interconnecting multiple network domains in Windows 2000 and later operating systems. A tree is a set of domains sharing a common network configuration, schema and global catalog. A forest consists of one or more trees that do not form a contiguous namespace.