Early Humans

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Across
  1. 4. large section of the Pacific Ocean which contains thousands of islands
  2. 6. region in the middle east along the Tigris and Euphrates rivers
  3. 7. land bridge that stretched across parts of the Bering Sea
Down
  1. 1. period of geological history where glaciers cover large portions of earth's surface
  2. 2. mass movement of people from one part of the world to another
  3. 3. second largest continent on Earth
  4. 5. second smallest continent on Earth