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