Across
- 2. all of the individuals of a species that live in the same area.
- 5. A unit of geological time in which a type of rock system is being formed that lasts tens of millions of years.
- 7. study of fossils or extinct organisms.
- 8. the ability of a trait to be passed down from one generation to the next.
- 10. differences in physical traits of an individual from the group to which it belongs.
- 11. ability of an individual to survive and reproduce in its specific environment.
- 13. change in a species over time; process of biological change by which descendants come to differ from their ancestors.
- 14. theory that states that natural disasters such as floods and volcanic eruptions shaped Earth’s landforms and caused extinction of some species.
Down
- 1. study of the geographic distribution of living organism.
- 3. theory that states that the geologic processes that shape Earth are uniform through time.
- 4. Small unit of time that depicts several millions of years.
- 6. evolution of two or more species from one ancestral species.
- 9. elimination of a species from earth.
- 12. process in which two or more species evolve in response to changes in each other.
- 13. Long and distinct division of time with a particular feature or characteristic that lasts hundreds of millions years.