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Key terms: bark cork stem tree layer cells plants periderm tissues phloem woody pine burr trunk cortex outside produce includes oak cork cambium epidermis protect maple birch older damage phenol repair canoes xylem roots gases surface derived secondary composed mature quercus removed covering pine bark bark include sun scald innermost vascular cambium woody stem inner bark outer bark callus growth layer of cells Search external links cited by footnotes on Wikipedia page Bark: |
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