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Growth ring

Growth rings (or "tree rings" or "annular rings") can be seen in a horizontal cross section cut through the trunk of a tree.

Visible rings result from the change in growth speed through the seasons of the year, thus one ring usually marks the passage of one year in the life of the tree..

For more information about the topic Growth ring, read the full article at Wikipedia.org, or see the following related articles:

Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Growth ring at Wikipedia.org. See the Wikipedia copyright page for more details.

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