| A | B |
|---|
| archaeologist | scientist who studies objects to learn about past human life |
| civilization | a complex society |
| culture | the set of beliefs, behaviors, and traits shared by a group of people |
| expose | to reveal |
| ice age | times when glaciers covered much of the Earth's surface |
| nomads | people who move from place to place as a group to find food |
| Paleolithic | relating to the earliest period of the Stone Age |
| technology | the use of advanced tools to solve problems; an ability gained by the practical use of knowledge |
| land bridge | a connection between two landmasses, especially a prehistoric one that allowed humans and animals to colonize new territory before being cut off by the sea |
| axe | a cutting tool that consists of a heavy edged head fixed to a handle with the edge parallel to the handle and that is used especially for felling trees |
| forager | a person or animal that searches widely for food or provisions |
| climate | the weather conditions prevailing in an area in general or over a long period |
| cave art | generally, the numerous paintings and engravings found in caves and shelters dating back to the Ice Age |
| extinct | having no living members; no longer in existence |
| prey | an animal hunted or seized for food |
| evolution | the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth |
| fire | combustion or burning, in which substances combine chemically with oxygen from the air and typically give out bright light, heat, and smoke |
| fossil | the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock |
| artifact | an object made by a human being, typically an item of cultural or historical interest |
| continental drift | the gradual movement of the continents across the earth's surface through geological time |
