Natural Selection

12345678910
Across
  1. 3. One factor that can influence species survival.
  2. 8. When individuals vary from one another.
  3. 10. Insect found in industrial England that is a prime example of natural selection.
Down
  1. 1. Charles ______.
  2. 2. ______ features may disappear over generations.
  3. 4. ______ Selection.
  4. 5. Survival of the ______.
  5. 6. Animal that people incorrectly believed had long necks due to stretchng over time.
  6. 7. Other word for when animals fight each other to survive.
  7. 9. What birds have variations of depending on their location/food source.