| 1. | In the later occupation levels, ceramic levels begin to take on a new character.
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| 2. | These same beads appear less frequently in the later occupation levels in the second millennium.
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| 3. | No significant evidence of distinct occupation levels was apparent.
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| 4. | The remains have been classified into five occupation levels, from A, at the top, to E.
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| 5. | In 1973 a flash flood uncovered the entrance to Levak Cave ( ) . occupation levels.
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| 6. | Earliest occupation levels at the Tanana Valley sites contain artifacts similar to the Siberian Dyuktai culture.
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| 7. | Evidence of human occupation levels further back-up the evidence that the site was not fully inundated throughout prehistory.
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| 8. | African Americans and Hispanics, compared to their white counterpart, experience a greater difference in income, education, and occupation levels.
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| 9. | Twenty-nine one-meter squares were excavated, leading to the discovery of an occupation level, dated to the Late Ceramic period.
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| 10. | Furthermore, glass beads appear most frequently in the early occupation sites and show a dramatic decrease in the later occupation levels.
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