Natural Selection

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Across
  1. 2. Changes to this (which is composed of living and non-living things) is what leads to a change in distribution of traits over time
  2. 6. A type of trait that does help an organism survive in its environment
  3. 8. A group of individuals of the same species that live in the same area
  4. 11. A type of trait that does not help an organism survive in its environment
  5. 12. This organism is "rough-skinned" and increased its poison levels over time
Down
  1. 1. Individuals born around the same time are of the same _____.
  2. 3. The different "versions" of a feature
  3. 4. If "blue eyes" is the trait, then "eye color" is the _____.
  4. 5. A type of graph that illustrates the trait variation of a feature and the distribution of each trait
  5. 7. This describes the number of individuals with each trait in a population (aka the height of a bar in a histogram)
  6. 9. This organism is the reason why the rough-skinned newt increased its poison levels over time
  7. 10. This describes the difference in (different types of) traits of a feature (clue: another word for "variability")