| A | B |
|---|
| Archeologist | A person who studies people from long ago. |
| Ice Age | An extremely cold period of time on earth |
| Glacier | A thick sheet of ice |
| Migrate | Animals or people who move to a new land |
| Theory | A possible explanation |
| Artifact | An object that someone made in the past |
| Ceremony | An activity done for a special purpose or event |
| Mesa | High, flat landform that rises from the land around it |
| Drought | A long period without rain |
