amnhnyc: Trees which survive where environmental conditions are extremely severe may grow less than a hundredth of an inch in diameter each year. The tree trunk above is a bristlecone pine from the White Mountains of eastern California, and is one of

amnhnyc: Trees which survive where environmental conditions are extremely severe may grow less than a hundredth of an inch in diameter each year. The tree trunk above is a bristlecone pine from the White Mountains of eastern California, and is one of

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