Evidence of the THEORY of evolution

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Across
  1. 4. "the chemical of life"
  2. 6. data base of all known fossils
  3. 7. a fossil that has bean dated
  4. 8. a structure with no purpose
  5. 10. change in an organism that increases its chance of surival
  6. 11. idea, can be proven wrong
  7. 12. comparing body parts
  8. 13. shows structure of organisms that lived long ago
Down
  1. 1. old rock is deeper than new rock
  2. 2. similar structures
  3. 3. early stage of animal development before the fetus
  4. 5. survival of the "fittest"
  5. 9. something that is true and proven with rock hard solid evidence and can't be changed or proven wrong.