| A | B |
|---|
| acquired trait | one that is not determined by genes |
| natural selection | organisms best suited to their environment reproduce more successfully |
| population | all the members of a species that live in the same area and make up a breading group |
| uniformitarianism | the geological structure of earth resulted from cycles of obseravable process and that these same processes operate continuously through time |
| adapt | to change genetically over generations to become more suited to the environment |
| fitness | the ability to individuals to surrvive to reproduce their genes |
| adaptive advantage | an organism that has a favorable trait |
| homologous | similar features that originated in a shared ancestor |
| mutation | an accidental change in a gene |
| theory of superposition | youngest rock is on top of mountain |
