Tree
Last update: Wednesday 03rd of December 2008
For other uses, see Tree (disambiguation). A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to 6 m; some authors set a minimum of 10 cm trunk diameter (30 cm girth). Woody plants that do not meet these definitions by having multiple stems and/or small size, are called shrubs. Compared with most other plants, trees are long-lived, some reaching several thousand years old and growing to up to 115 m (379 ft) high. Trees are an important component of the natural landscape because of their prevention of erosion and the provision of a weather-sheltered ecosystem in and under their foliage. Trees also play an important role in producing oxygen and reducing carbon dioxide in the atmosphere, as well as moderating ground temperatures. They are also elements in landscaping and agriculture, both for their aesthetic appeal and their orchard crops (such as apples). Wood from trees is a building material, as well as a primary energy source in many developing countries. Trees also play a role in many of the world's mythologies (see trees in mythology). As of 2005, there were approximately 400 billion trees on Earth, about 61 per person.
Tree
A tree is a perennial woody plant. It is most often defined as a woody plant that has secondary branches supported clear of the ground on a single main stem or trunk with clear ...
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Tree - Wikipedia, the free encyclopedia
In computer science, a tree is a widely-used data structure that emulates a tree structure with a set of linked nodes. It is an acyclic and connected graph.
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Tree (data structure) - Wikipedia, the free encyclopedia
This official site of the Arbor Day Foundation provides information about planting and caring for trees, our Rain Forest Rescue and Tree City USA programs, and much more. Buy trees ...
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Tree Identification Guide at arborday.org
Tree Design Studio in Pennsylvania specializes in cutting edge website design, web based software development, brand development and print design. Interactive agency services ...
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TREE DESIGN STUDIO, A Full Service Agency - Get Your Game On!
Tree Finder and Tree Key - A Quick and Easy Way to Identify 50 Common North American Trees ... Tree Leaf Key: A Quick and Easy Way to Identify 50 Common Native North American Trees
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