Evolution Vocabulary Review

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Across
  1. 1. This naturalist discovered the theory of evolution by natural selection.
  2. 5. A variation of a trait that helps an organism survive and reproduce in its environment (increases its fitness).
  3. 9. An organism’s ability to survive and reproduce.
  4. 10. The law of this states that new rock forms on top of old rock, thus fossils found deeper in rock layers are older.
  5. 11. The study of the history of Earth (and life on Earth) as recorded through rocks and the fossil record.
Down
  1. 2. The process by which organisms in nature best adapted to their environment survive and leave more offspring is called _________ selection.
  2. 3. The small differences in traits.
  3. 4. According to the principle of common decent, all species descended from ________ ancestors, and exhibit diversity due to adaptation and natural selection.
  4. 6. In this type of selection, humans select which variations they find useful and breed those specific individuals to change the traits of populations over time.
  5. 7. The change in a species’ inheritable characteristics over many generations.
  6. 8. The preserved remains or traces of ancient organisms in rocks.