| A | B |
|---|
| Homo sapiens | "wise human" |
| Homo habilis | Louis and Mary Leakey |
| Homo erectus | "walking human" |
| Australopithecus | earliest humans |
| hominid | human-like creature that ate meat and vegetables and walked upright |
| punctuated equilibrium | quick evolution |
| gradualism | slow evolution |
| embryology | the study of embryos |
| homologous structures | structures that give evidence of a common ancestor |
| vestigial structure | a body part that doesn't have a function |
| fossils | any remains of ancient life |
| sedimentary rock | rock with a lot of fossils in it |
| extinction | the dying out of a species |
| endangered species | species with so few individuals that they are in danger of becoming extinct |
| 'Lucy' | Australopithecus found by Don Johansen |
| variation | the appearance of an inherited trait that makes an individual different from other members in it's species |
| evolution | change over time in the hereditary material |
| species | a group of organisms that successfully reproduces among itself. |
