Evidence of Evolution

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Across
  1. 1. body part that has lost its original function through evolution
  2. 6. body parts that perform a similar function but differ in structure
  3. 8. fossil that has characteristics of both ancestral organisms that evolved later
  4. 9. chart that divides Earth's history into different time units based on rock changes and fossils
Down
  1. 2. the science of the development of embryos from fertilization to birth
  2. 3. body parts of organisms that are similar in structure and position but different in function
  3. 4. study of similarities and differences among structures of different species
  4. 5. record of all of the fossils ever discovered
  5. 7. event that occurs when the last individual organism of a species dies