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Practice Speaking: Read Aloud
ID: #440
Long Tree Ring 1
Here's how tree ring dating, known to scientists as dendrochronology (from the Greek roots Dendron = tree, and chronos = time), works. If you cut a tree down today, it's straightforward to count the rings inwards, starting from the tree's outside (corresponding to this year's growth ring), and thereby to state that the 177th ring from the outermost one towards the centre.
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