evolution

4. remnants of an organ or structure that functioned in an earlier ancestor (ex. wisdom teeth or tail bones)
7. theory that states that the geologic processes that shape Earth are uniform through time
9. all of the individuals of a species that live in the same area
12. inherited trait that is selected over time because it allows organisms to better survive in their environment
13. measure of an organism's ability to survice and produce offspring relative to other members of a population
14. principle that states that the changes in landforms result from slow changes over a long period of time
16. group of organisms so similar to one another that they can breed and produce fertile offspring
17. the study of the distribution of organisms around the world
18. pathway of natural selection in which intermediate phenotypes are selected over phenotypes at both extremes
19. observable change in the allele frequency of a population over a few generations

1. proportion of one allele, compared with all the alleles for that trait, in the gene pool
2. study of fossils or extinct organisms
3. differences in physical traits of an individual from the group to which it belongs
5. process by which humans modify a species by breeding it for certain traits
6. body part that is similar in structure on different organisms, but performs different functions (ex. limbs of humans and bat wings)
8. trace of an organism from the past
10. body part that is similar in function as a body part of another organism, buff is structurally different (ex. moth wings and bird wings)
11. theory that states that natural disasters such as floods and volcanic eruptions shaped Earth's landforms and caused the extinction of some species
14. collection of alleles found in all of the individuals of a population
15. pathway of natural selection in which one uncommon phenotype is selected over a more common phenotype