Across
- 4. differences in physical traits of an individual from the group to which it belongs
- 5. a group of organisms that are closely related and can mate to produce fertile offspring
- 6. a selection that the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well-adapted individuals do
- 8. the process of becoming adapted to an environment
- 9. a model of evolution in which gradual change over a long period of time leads to biological diversity
Down
- 1. the process of change by which new species develop from preexisting species over time
- 2. a selection that the human practice of breeding animals or plants that have certain desired traits
- 3. the theory that states that natural disasters such as floods and volcanic eruptions shaped Earth's landforms and caused the extinction of some species
- 7. the theory that states that the geologic processes that shape Earth are uniform through time