| A | B |
|---|
| biodiversity | the measure of the number of different species in an area |
| adaptation | any body shape, body process, or behavior that allows an organism to survive in its environment and carry out its life processes |
| natural selection | the process in which organisms with characteristics best suited for the envornoment survive, reporduce and pass these traits to their offspring |
| common ancestor | the shared ancestor of new, different species that arose from one population |
| fossils | remains or traces of ancient life |
| captive breeding | the breeding of endangered species in captivity in order to build up the number of individuals in a population |
| species | a group of organisms that look alike and reproduce |
| diversity | variety or differences |
