Fill in the missing letters in the paragraph.
The number of underlines shows how many letters you need to fill in. You may answer with the full word or only the missing part.
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Artifacts recovered from archaeological sites often vary in shape, size, and material. By grou_ _ _ _ these objects according _ _ shared characteristics, researchers can iden_ _ _ _ patterns in how tools and objects were made and used. Changes in artifact styles over ti_ _ also provide clu _ _ about cultural devel_ _ _ _ _ _ and technological change. This met_ _ _ allows archaeologists to compare sites and establish relative timelines, even when pre_ _ _ _ dating methods are unavailable.