7th: Natural Selection

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Across
  1. 2. - Organisms fighting for limited resources
  2. 4. - Formation of a new species
  3. 6. - Passing of traits from parents to offspring
  4. 7. - An organism's observable characteristics
  5. 10. - Differences between individuals of a species
  6. 13. - An organism's genetic makeup
  7. 14. - A change in an organism's DNA
  8. 15. - A group of organisms of the same species
Down
  1. 1. - External conditions an organism lives in
  2. 3. - Change in species over time
  3. 5. - Process where organisms better adapted survive
  4. 8. - How well suited an organism is to its environment
  5. 9. - Variety of life on Earth
  6. 11. - A trait that helps an organism survive
  7. 12. - The dying out of a species