| A | B |
|---|
| Evolution | changes over a period of time in the genetic makeup of a group of organisms of the same kind. |
| Fossil | evidence fo past life, such as bones, shells, or imprints. |
| Homologous | body parts of different species with similar structure and development but possibly different functions. |
| Vestigial organ | a body part that has no known function. |
| Mutations | a sudden change in the DNA pattern pssed from one generation to the next. |
| Divergent evolution | a process by which many different species developed from a common ancestor. |
| Convergent evolution | a process in which unrelated species develped similar characteristics. |
| Variation | difference in the structure or characteristics of similar organisms. |
| Adaptation | a process by which anorganism or species becomes better suited to a change in its environment. |
| Natural selection | a process by which organisms best suited to their environment survive and reproduce. |
