Across
- 3. One factor that can influence species survival.
- 8. When individuals vary from one another.
- 10. Insect found in industrial England that is a prime example of natural selection.
Down
- 1. Charles ______.
- 2. ______ features may disappear over generations.
- 4. ______ Selection.
- 5. Survival of the ______.
- 6. Animal that people incorrectly believed had long necks due to stretchng over time.
- 7. Other word for when animals fight each other to survive.
- 9. What birds have variations of depending on their location/food source.