evidence of the THEORY of evolution

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Across
  1. 2. a fossil that has bean dated
  2. 4. similar structures
  3. 7. old rock is deeper than new rock
  4. 8. early stage of animal development before the fetus
  5. 9. "the chemical of life"
Down
  1. 1. a structure with no purpose
  2. 3. comparing body parts
  3. 5. shows structure of animals that lived long ago
  4. 6. data base of all known fossils