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document.write('<td valign=top align=left colspan=2><img src="images/fun.rings.top.gif"');
document.write('alt="Rings" width="300" height="116" border="0"></td></tr>');
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document.write('alt="Rings" width="117" height="99" border="0"></td>');
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document.write('Heartwood is found in the center of the tree and serves as support for the tree.');
document.write('This portion of the tree is no longer living. It is dead! Heartwood sometimes ');
document.write('appears much darker in color. Can you find the heartwood in the picture?');

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