| A | B |
|---|
| uniformitarianism | the theory that processes that can be seen today also occurred in the past! |
| artificial selection | humans change a species by breeding it or a certain trait. |
| natural selection | when individuals inherit benifical adaptions and produce more offsprings then other individuals |
| variations | The differences in physical traits. |
| evolution | the process of biological change by which desendents come to differ from their ancestors |
| adaption | characterists that alow an organism to surive better in its enviroment |
| Jean-Baptiste Lamarck | proposed an hypothesis that had species evolving desired traits and passing them to their offspring. j.b.l. |
| Charles Lyell | Had the idea that the earth was shaped by the same processes still in operation today. |
| fitness | measure of an organism's ability to survive and produce offspring relative to other members of a population |
| homologous structure | body part that is similar in structure on different organisms but performs different functions |
| analogous structure | body part that is similar in function as a body part of another organism but is structurally different |
| remnant structures | remnants of an organ or structure that functioned in an earlier ancestor |
| species | a group of organisms so similar to one another that they can breed and produce fertile offspring |
| catastrophism | theory that states that natural disasters such as floods and volcanic eruptions shaped earth's landforms and caused extinction of some species. |
| population | all of the individuals of a species that live in the same area. |
