| A | B |
|---|
| anthropology | the study of the origins and behavioral devolpment of human beings |
| oral history | stories passed down through generations by word of mouth |
| radiocarbon dating | a scientific test that can tell the age of any dead plant or animal |
| artifacts | an object produced by humans |
| natural selection | creatures that adapt to their environment sturvuve those who don't become extinct |
| nomad | a person who has no single settled home |
| ancestors | a person from whom one is descended especially if of a generation earlier |
| fossils | the remains of a living organism |
| fertile | land that contains the substances that plants need in order to grow |
