Across
- 4. When organisms survive and reproduce
- 6. The organism that Charles Darwin studied on the Galapagos Islands
- 8. A trait that helps an organism survive
- 9. Migration and hibernation are examples of this type of adaptation
- 10. A random change in DNA that can be beneficial, harmful, or neutral
Down
- 1. Sharp beaks and striped fur are examples of this type of adaptation
- 2. The first person to study natural selection
- 3. An example of a physical adaptation
- 5. Species change over time and adapt to their
- 7. The genetic differences in a population