Tree Clipart

Throughout many centuries the tree plays an important role in life of people. Without trees it is impossible to imagine life on the earth. The tree gives us protection and food. The tree emits the oxygen necessary for breath and absorbs carbon dioxide. Forest is also a habitat of animals, where human received food by hunting. Since time immemorial, tools have been made from wood, and as a raw material the tree is simply irreplaceable. This is the most common material in the world. The tree is widely used as fuel. With regard to the use of substances contained in wood, in medicine - it is just a beginning stage in the research and development.

These are plants that have a tree trunk protected by bark. It branches out at a height of several meters from the ground. The crown of the tree is formed by branches with leaves of various forms: broad in hardwoods, for example, oak, plane tree, chestnut, and needle-like in coniferous trees - pine, spruce or cypress. Some types of trees are called evergreen, because their leaves are always green, and they change them gradually, "in a circle." Deciduous trees once a year - at the beginning of a colder or more dry season - drop all the foliage. The roots of the trees usually develop in the lower part of the trunk.