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