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    Analyzing tree rings can provide information about the tree’s age and the weather during each year of the tree’s life. Tree-ring samples can be analyzed for archeological purposes using chronological analysis, behavioral analysis, or climatic analysis. Scientists extract core samples using a borer that's screwed into the tree and pulled out, bringing with it a straw-size sample of wood about 4 millimeters in diameter. The color and width of tree rings can provide snapshots of past climate conditions.
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    Tree rings provide snapshots of Earth's past climate
    These rings can tell us how old the tree is, and what the weather was like during each year of the tree’s life. The light-colored rings represent wood that grew in the spring and e…
    NASA
    https://climate.nasa.gov/news/2540/tree-rings-provide-snapshots-of-earths-past-climate/
    What Can Trees Tell Us About Climate Change? | NASA Climate Kids
    Learn how scientists use tree rings to study past weather and climate conditions. Find out how the color and width of tree rings can tell us about temperature, precipitation, and d…
    NASA
    https://climatekids.nasa.gov/tree-rings/
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    Dendrochronology - Tonto National Monument (U.S. National Park Service)
    For archeological purposes, tree-ring samples can be analyzed three ways: chronological analysis, behavioral analysis, or climatic analysis. Chronological analysis involves studyin…
    National Park Service
    https://www.nps.gov/tont/learn/nature/dendrochronology.htm
    Tree Rings and Climate | Center for Science Education
    Scientists do not typically cut down a tree to analyze its rings. Instead, core samples are extracted using a borer that's screwed into the tree and pulled out, bringing with it a …
    University Corporation for Atmospheric Research
    https://scied.ucar.edu/learning-zone/how-climate-works/tree-rings-and-climate
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