Across
- 6. well-tested explanation that unifies a broad range of observations
- 7. process by which individuals that are better suited to their environment survive and reproduce most successfully
- 8. inherited characteristic that increases an organism's chance for survival
- 10. ability of an organism to survive and reproduce in its environment
Down
- 1. a group of similar organisms that can breed and produce fertile offspring
- 2. disappearance of a species from all parts of its geographical range
- 3. change in a kind of organism over time
- 4. the interaction of individuals that vie for a common resource that is in limited supply
- 5. genetic differences within and among species or a population
- 9. an individual from which an organism is descended