| A | B |
| homologous | similar sturctures explained by common ancestry |
| Galapagos Islands | location Darwin observed finches here |
| vestigial | structures that no longer have a function |
| speciation | the forming of new species |
| biblical creationism | belief the physical universe was created by God |
| evolutionism | belief the physical universe developed by chance |
| gap theory | belief the "first creation" was destroyed during Satan's fall |
| literal view | belief each day of Creation was 24 hours long |
| long-day theory | belief each day of creation was a long period of time |
| progressive creationism | belief God created new groups of species at wide intervals |
| common ancestor | organism that has different groups of organisms as its offspring |
| fossil record | a record of past living things |
| germ mutation | a genetic change that can be passed down to offspring |
| missing link | organism needed to fill out evolutionary path |
| theory of natural selection | environment destroys organisms that are unable to adapt |
| somatic mutation | genetic change that only affects the host organism |
| mutation-selection theory | change by mutation improving an organisms chance to survive |