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artifact – n. a simple object made by people in the past
archeological – adj. having to do with the science of past human life and activities by studying the bones, tools, etc. of ancient people
extinct – adj. no longer existing
prehistoric – adj. relating to the time before people could write
glacier – n. a very large area of ice that moves slowly down a slope or valley or over a wide area of land
armadillo - n. an animal with a hard shell covering its body
