Tree (1)

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Structure of Tree (1) Trees have the longest lifespan of all the   higher forms of life. Perhaps the greatest   survivors among them are the bristcone pines   (Pinus longeava) of California's white Mountains.   One specimen there, known appropriately as Methuselah, is estimated to be around 5,000   years old: it was a mere seedling when   the Egyptians built their pyramids.     All trees are classified as coniferous tree   and deciduous trees. Coniferous tree are also   know as evergreens. Deciduous trees will   drop their leaves in cold winter.