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    The company was formerly known as Gibson Guitar Corp. By the 1930s, the company was also making flattop acoustic guitars, as well as one of the first commercially available hollow-body electric guitars, used and popularized by Charlie Christian.

    Dating methods in archaeology

    These remains include the fossils (preserved bones) of humans, food remains, the ruins of buildings, and human artifactsitems such as tools, pottery, and jewelry.

    From their studies, archaeologists attempt to reconstruct past ways of life.

    During this period of time, the climates and ecology of plants and animals have changed.

    Populations have grown and in turn, the cultures of Oregon's inhabitants have changed.

    Presumably you came here to learn about Oregon's past, right?

    Well, this section offers my in-depth perspective on the prehistory of Oregon and how it fits into this region.

    Archaeology also examines many of the same topics explored by historians.

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    The people who lived here over the last 14,300 years have developed technologies to adapt themselves to the demands of these varied ecological zones with their abundant natural resources.Divide the class into small groups that will each research and orally report on one ancient site uncovered by archaeologists.The goal is for the class as a whole to gain an appreciation for the variations and similarities among ancient cultures and an understanding of scientists' and social scientists' study of ancient cultures.Radiocarbon, or carbon 14, is an isotope of the element carbon that is unstable and weakly radioactive. Carbon 14 is continually being formed in the upper atmosphere by the effect of cosmic ray neutrons on nitrogen 14 atoms.It is rapidly oxidized in air to form carbon dioxide and enters the global carbon cycle.

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