Tree Trunks, the Dead Supports the Living
Trees are impressive life forms, producing tall, majestic columns that reach to the sky. Besides support, tree trunks perform a number of functions, so here’s a lesson in tree physiology. Growth of the trunk occurs at a thin layer of cells called the cambium. Here and only here does active cell division occur. The cambium is located near the outer portion of the trunk and can be damaged by fire or wounds made by tools or equipment. It grows two kinds of wood cells; one type grows towards the tree center, the other outward.
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