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.
Tree lore is a suspected ancient school of knowledge with roots stretching back into our earliest symbolic imaginations. The Tree is a common universal, archetypal symbol that can be found in many different traditions around the ancient world. Trees are symbols of physical and spiritual nourishment, transformation and liberation, sustenance, spiritual growth, union and fertility. The tree is a spiritual motif and framework, a map of conception and consciousness that brings together the temporal worlds of time, space and consciousness.