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An old moss-covered oak has so few leaves, only on the topmost branches, it is perilously close to being unable to sustain photosynthesis...
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High Valley Survivor

Lake County

An old moss-covered oak has so few leaves, only on the topmost branches, it is perilously close to being unable to sustain photosynthesis to the level necessary for its survival. Photo © copyright by Robert Faucher.

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