Treasures of the American Museum of Natural History

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Macintosh Picture Format | 1996-09-10 | 191KB | 640x310 | 8-bit (217 colors)

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OCR: Sequoia widespread redwood family. No one knows how long sequoia can live Many trees Sequoia National Park California are over three thousand vears old still growing vigorously and producing abundant seeds every year. This sequoia slice offers lesson ir how to discover the age of tree Around the central point of the slice are concentric rings, some of which are invisible to the naked eye Each of these represents one year's growth To make the immense age of the tree more vivid. marks have been placed on years