Ch. 13 VOCAB

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Across
  1. 3. All the fossils ever discovered on Earth.
  2. 5. The process by which populations of organisms with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have variations.
  3. 7. The change over time in populations of related organisms.
  4. 8. Body parts that perform a similar function but differ in structure.
  5. 10. An inherited trait that increases an organism's chance of surviving and reproducing in its environment.
  6. 11. The breeding of organisms for desired characteristics.
  7. 13. The study of similarities and differences among structures of living species.
Down
  1. 1. The preserved evidence of the activity of an organism.
  2. 2. Body parts that have lost their original function due to evolution.
  3. 4. Body parts of organisms that are similar in structure and position but different in function.
  4. 6. When the last individual organism of a species dies.
  5. 9. The science of the development of embryos from fertilization to birth.
  6. 12. A slight difference in an inherited trait of individual members of a species.