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Marten Alaska. Marten (Martes americana). |
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Ice Hole hole in ice Alaska. A leaf absorbs heat and accelerates ice melt. |
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Dendroctonus Rufipennis spruce bark beetle Alaska. Entrance holes where spruce bark beetle have entered tree to feed. |
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Burrowing Insects Entrance to Bark Beetle Tree Alaska. Spruce bark beetle entrance hole with sawdust. |
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