| A | B | 
| migration | a voluntary or forced movement of people from place toanother | 
| glacier | a huge sheet of ice | 
| band | a small group of people wfho work together to do activities | 
| nomad | a wanderer who has no settled home | 
| theory | a possible explanation for something | 
| culture | a way of life | 
| archaeologist | a scientist who studies the cultures of people of long ago | 
| artifact | am object that early people had made | 
| evidence | proof | 
| origin story | a story that tells of a people's beliefs about the world and their place in it | 
| Ice Age | period during which low temperatures caused large areas of Earth's surface to freeze | 
| Bering Strait | narrow body of water that separates Asia from North America |