Across
- 1. ability of a trait to be passed from one generation to the next
- 3. change in species over time
- 5. differences in physical traits of an individual from the group to which it belongs
- 7. study of fossils or extinct organisms
- 8. mechanism by which individuals that have inherited beneficial adaptations produce more offspring on average than do other individuals
- 11. theory that states that natural disasters shape Earth's landforms
- 13. all the individuals of a species that live in the same area
- 14. study of the distribution of organisms around the world
- 16. theory that states that the geologic processes that shape Earth are uniform through time
- 18. remnants of an organ or structure that functioned in an earlier ancestor
Down
- 2. process by which humans modify a species by breeding it for certain traits
- 4. body part that is similar in structure in different organisms but performs different functions
- 6. inherited trait that is selected for over time because it allows organisms to better survive in their environment
- 9. body part that is similar in function as a body part of another organism but is similarly different
- 10. group of organisms similar to one another can breed
- 12. trace of an organism from the past
- 15. principle that states that the changes in landforms result from slow changes over long period of time
- 17. measure of an organism's ability to survive and produce offspring relative to other members of a population