Across
- 5. the process of change by which new species develop from preexisting species over time
- 7. The process of becoming adapted to an environment
- 8. theory that states that natural disasters such as floods and volcanic eruptions shaped Earth’s landforms and caused extinction of some species
- 10. study of fossils or extinct organisms
- 12. theory that states that the geological processes that shape Earth are uniform over time
- 15. a model of evolution in which gradual change over a long period of time leads to biological diversity
- 16. - body part that is similar in structure on different organisms but performs different functions
Down
- 1. measure of an organism's ability to survive and produce offspring relative to other members of a population
- 2. a group of organisms that are closely related and can mate to produce fertile offspring
- 3. the human process of breeding animals or plants that have certain desired traits
- 4. the study of geographical distribution of the living organisms and fossils on Earth
- 6. the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do
- 9. body part that is similar in function as a body part of another organism but is structurally different
- 11. remnants of an organ or structure that functioned in an earlier ancestor
- 13. the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock
- 14. differences in physical traits of an individual from the group to which it belongs