| A | B |
|---|
| species | group of organisms whose members successfully reproduce among themselves |
| evolution | change in the hereditary features of a species over time |
| acquired charactersitics | Lamarck's theory |
| darwin | hypothesized that individuals with traits ost favorable for a specific environment survive and pass those traits on to their offspring |
| slow | Darwin hypothesized that the rate of evolution is _________ |
| survive | according to Darwin organisms produce more organisms than can ________________ |
| endangered species | a species that has so few individuals left that they are in danger of becoming extinct |
| extinction | the dying out of a species |
| adaptation | any variation that makes an organism better suited to its environment |
| camouflage | lets an organism blend into its envirionment |
| mutations | a source of variation among organisms |
| natural selection | organisms with traits best suited to their environment are more likely to survive |
| gradualism | slow change of one species to another new species |
| punctuated equilibrium | the rapid evolution of a species |
