| A | B |
| MacroEvolution | General change over a period of time |
| Living Diversity | Variety of living things |
| Adaptations | Physical and behavioral traits that enable organisms to survive |
| Fitness | The ability of an individual to survive and reproduce |
| Homologous Structures | Similar structures, but different functions |
| Vestigial Organs | Structures that have little or no obvious purpose |
| Natural Selection | The survival of the fittest |
| Artificial Selection | Breeding of organisms by humans |
| Speciation | The formation of a new species |
| Darwin | Father of Evolution theory |
| Galapagos Islands | Where Darwin studied unusual species |
| Beagle | Darwins Ship |
| Extinction | To disappear completely as a species |
| Fossil | Preserved or mineralized remain |
| Finches | Birds that showed big differences on Galapagos |
| Mesonychid | Link between modern whales and hoofed mammals |
| Population | All individuals of a species that live together at one time |