Natural Selection and Evolution

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Across
  1. 2. A trait that helps an organism survive and reproduce
  2. 4. The form of natural selection that favors the survival of two extreme traits
  3. 5. The Father of Evolution
  4. 7. The species of bird Charles Darwin studied in the Galapagos Islands
  5. 8. The form of natural selection that favors the average trait
Down
  1. 1. Different forms of a trait; a condition necessary for natural selection
  2. 3. Change in characteristics over a long time
  3. 6. A heritable characteristic passed down from parent to offspring
  4. 7. The ability to reproduce (in terms of Biology)
  5. 9. An idea strongly supported by evidence