| A | B |
| industrial melanism | process by which populations near polluted areas evolve to have darker (more protective) coloring than those in cleaner areas |
| macroevolution | change in species over a lkong time and on a large scale |
| microevolution | change in species over a short time and on a small scale |
| parallel evolution | the process by which two or more species evolve separately, but in similar ways, from a common parent population |
| punctuated equilibrium | process by which species undergo little or no change for long periods of time and then evolve via sudden, substantial changes |
| reproductive isolation | occurs when one population of a species is prevented from breeding withmembers of another population of that species |
| sedimentary rock | formed by the compression of sediments such as sand |
| speciation | the evolution of a new species |