Evidence of evolution

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Across
  1. 5. Survival of the fittest
  2. 8. a genetic variation that is helpful to the species
  3. 9. same species, different traits
  4. 11. the remains of body parts
Down
  1. 1. Evidence of the activities of organism
  2. 2. gradual slow process
  3. 3. a rock that contains preserved parts
  4. 4. error in DNA
  5. 6. structure organisms have similar bone or organ structures
  6. 7. Proposed the theory of Natural selction
  7. 10. Collection of fossils that show the timeline of life on earth