| A | B |
|---|
| evolution | a change in hereditary featuresof a population from generation to generation |
| competition | a constest among living things for their needs |
| extinct | no longer living |
| natural selection | something in the surroundings determines wheather a living thing does or does not survive |
| variation | a trait that makes a living thing different from others in its species |
| sedimentary | a type of rock |
| fossil | remains of any once-living thing |
| mutation | change in the genetic code |
| Darwin | father of the theory of evolution |
| overproduce | more offspring are produced than seem needed |
