| A | B |
|---|
| fossil | any preserved part or trace of an organism |
| relative dating | places events in geologic history in the proper order. ex. superposition |
| absolute dating | the process gives the true 'age' of a fossil or rock by using Carbon-14 dating |
| homologous structures | structure of the body on different organisms that are similar but have different functions ex. flippers of whales, wings of bird |
| analogous structures | structures that serve the same purpose in different species but evolved independently. ex. butterflies,bats and birds wings |
| vestigial structures | structures that do not have important roles, ex. appendix in humans |
| convergent evolution | the process by which unrelated organisms come to resemble one another. ex. dolphins and sharks |
| divergent evolution | a process where two species develop differences through natural selection. ex. grizzly bear, polar bear |
| coevolution | process by which two species evolve in response to changes in each other over time |
| mimicry | a type of adaptation where an organism resembles another organism. ex. scarlett king snake and coral snake |
