What is the structure of a tree bark?

Tree bark consists of several layers, primarily the outer bark (periderm) and inner bark (phloem). The outer bark provides protection against environmental factors and pests, while the inner bark is responsible for transporting nutrients produced by photosynthesis. Beneath these layers lies the cambium, a thin layer of actively dividing cells that contributes to the growth of both the bark and the wood (xylem) beneath it. Together, these layers play crucial roles in the tree's health and growth.