| A | B |
| Fossil | Any evidence of ancient life forms |
| Biogenesis | Idea that all life comes only from other life |
| Spontaneous generation | Idea that living things can come from non-living things |
| Plate tectonics | Theory that explain how continents move |
| Adaptive radiation | The evolution of a single ancestral species into many species |
| Vestigial structure | Structures that have reduced function but may have been important to an ancestor |
| DNA comparisons | The most reliable evidence for evolution |
| Camouflage | Blending in with the surroundings to increase survival expectation |
| Mimicry | Looking like another organism to increase survival or reproduce |
| Convergent evolution | Distantly related organism evolve similar traits due to similar selection pressures |
| Divergent evolution | Closely related organisms that become more and more different over time |
| Gene pool | All alleles found in a population |
| Gradualism | Idea that species originate through a buildup of adaptations over time |
| Natural selection | Individuals with traits best suited for their environment will survive and pass those traits on to the next generation |