Thursday, October 8, 2009

Three Rings


A scientists determine the age of a tree by counting the rings. Scientists can use small, non-destructive core samples from living tree.The study of the annual rings in trees is called dendrochronology. A tree ring is simply a layer of wood produced during one tree's growing season. Scientists can use the tree rings described above for reconstructing past climate because trees are good environmental indicators. This an example of Relative dating.

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