| A | B |
| Links | connects; Traits that are similar in two species |
| The HMS Beagle | The ship Darwin sailed to South American in 1831. During the 5 year voyage, he studied many species of plants and animals. |
| Population | A group of individuals of a species. (ex: population of geese at CMS) |
| Predator | An organism that hunts and eats another organism. |
| Remains | Dead bodies |
| Reproduce | Make a copy; have babies. |
| Resistant to | Able to defend itself against something |
| Scarce | Very hard to find. |
| Species | A group of similar organisms that can reproduce ( have babies). |
| Hypothesis | An idea that can be tested. |
| Strain | A group within a species that has a special set of traits. (ex: strain of bacteria) |
| Survival | The ability to continue living |
| Theory | An explanation with evidence to support it. |
| Trait | A characteristic that is controlled by genes. (ex: eye color, hair color, height) |
| Variations | Small differences in the same kind of organisms (ex: different color hair) |
| Natural selection | When helpful traits are passed on to the next generation. |