Evolution

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Across
  1. 2. A trait that allows a living thing to survive in its environment
  2. 4. the struggle among living things to get their needs for life
  3. 6. A transitional fossil showing the evolution of birds from dinosaurs
  4. 8. A change in the DNA of an organism
  5. 10. The study of how plants and animals are distributed on Earth
  6. 11. A group of living things that can reproduce and form fertile offspring
  7. 12. Survival of the _____________
  8. 14. Organs that serve no current function
  9. 15. The name of Darwin's book explaining his theory of evolution
Down
  1. 1. Features that serve different functions but have the same structure
  2. 3. Features that serve the same function but have different structures
  3. 5. This group of volcanic islands belongs to Ecuador
  4. 7. Humans share 98% of their DNA with this primate
  5. 9. Darwin studied the beaks of these birds in forming his theory of evolution
  6. 10. Organism often used to directly observe microevolution
  7. 13. Type of rock that may contain fossils