| Front | sapwood |
|---|---|
| Back | چوب نرم وزنده پوست درخت the soft outer layers of recently formed wood between the heartwood and the bark, containing the functioning vascular tissue. The beetles lay their eggs in trees and the resulting larvae bore into the wood, feeding on the tree's cambium, sapwood , and heartwood and impeding the movement of water and nutrients through the tree. |
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