| A | B |
| Hominid | bipedal mammals that walk upright, have large brains, small teeth and jaw and flatter face |
| Glacier | a huge slow-moving mass of ice |
| Climate | the average weather conditions in an area over a long period of time |
| Paleolithic Age | "Old Stone Age" beginning with simple stone tool-making; 2.5 mil. to 10,000 B.C. |
| Neolithic Age | "New Stone Age" beginning with more complex stone tool-making and the start of agriculture; 8,000 to 5,000 B.C. |
| Band | a group of people; a small, loosely organized group of hunter-gatherers, consisting of 20 to 30 people |
| Hunter-gatherer | a person who gets food by hunting wild animals and gathering wild plants, roots, nuts and berries |
| Nomads | a group of people who move with their flocks and herds as the seasons change to find water and pastures |
| Technology | the tools, machines and methods used to make products, save time and improve people's lives |