Across
- 4. A type of natural selection based on an organism's ability to attract a suitable mate.
- 6. Refers to the change over time, where modern organisms have descended from earlier organisms.
- 8. The process where organisms best suited to their environment are more likely to survive and reproduce.
- 11. Structures that are similar in different species and inherited from a common ancestor.
Down
- 1. inherited behaviors or physical characteristics that aid an organism in surviving and reproducing in its environment.
- 2. The struggle between organisms for limited resources in the same environment.
- 3. The process where two species evolve in response to changes in each other over time.
- 5. Preserved remains or traces of organisms from the past.
- 7. Describes a species that is no longer active and unlikely to reappear.
- 9. A group of similar organisms capable of mating and producing offspring that can also reproduce.
- 10. Refers to how well an organism can survive and reproduce in its specific environment.