Scales of Evolution

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Across
  1. 5. An ancestor and all its descendants
  2. 7. Adapting to look like another species
  3. 10. Other than the environment, ____ can also cause selection
  4. 11. When two species evolve closely with each other
  5. 13. When a species no longer exists it is:
  6. 14. Evolution between species or higher taxonomic levels is ____evolution
Down
  1. 1. the eggs or chicks a bird has at one time
  2. 2. Needed for natural selection
  3. 3. Evolution within populations is ____evolution
  4. 4. When the same resources are needed
  5. 6. A trait that makes an organism more fit for their environment
  6. 8. When new species are formed
  7. 9. A species that hurts another species' fitness by increasing their own
  8. 12. The dinosaur ancestors of birds