| A | B |
|---|
| The first living organisms on Earth | single-celled beings |
| changes that occur in species over time | evolution |
| The first person to suggest that living things adapt, or change over time | Charles Darwin |
| a collection of fossils (preserved remains) that provides clues to the history of Earth’s organisms | fossil record |
| living things react and respond to nature | natural selection |
| As the frequency of a trait changes over time, the population is said to be | evolving |
| when a population produces more offspring than can possibly survive | overproduction |
| the maximum number of organisms that can acquire the resources necessary for life | carrying capacity |
| These can be oxygen, food, shelter, and water | limited resources |
| when 2 organisms interact for some limiting resource | competition |
| the unique combination of traits that results from sexual reproduction | Genetic variation |
| during the industrial revolution, pollution caused tree bark to darken. Which population of moths increased? | dark moths |
| Traits that are acquired during life are ____ passed on to offspring | NOT |
| random alterations in DNA base sequence can cause changes in the individual | mutations |
| This is the MAIN source of variation | Genetic shuffling |
| the physical appearance changes over time. Structures that are no longer used or needed give clues to the evolutionary past | Structural change |
| molecular or biochemical changes that affect how an organism works | Functional change |
| Certain behaviors found in animals are common because they result in greater reproductive success | Behavioral change |
| the disappearance of an entire species | extinction |
| Extinction is inevitable for all species, including | humans |
