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Tree Rings Affected by More than Just Climate
ENN.Com  7/29/2011

To this point, tree rings have been amazingly useful for gathering information on past climates. A two hundred year old tree can carry a world of information in its rings. In temperate regions, where seasons differ greatly, each ring denotes one year of growing. For longer growing seasons, the rings are wider. For shorter growing seasons, they are narrower...

ENN.Com has the full article: Read it here

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