Evidence for evolution

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Across
  1. 5. The study of comparing anatomies of different species.
  2. 6. An organism from which two different organisms have derived from.
  3. 7. The way species are/were distributed around Earth.
  4. 9. The __ limb occurs in whales, humans and dogs and is a homologous structure.
Down
  1. 1. A diagram used to display ancestry.
  2. 2. A physical feature of two or more species, which may not necessarily serve the same purpose but derived from a common ancestor.
  3. 3. A physical feature of two or more species, which evolved independently to serve the same purpose.
  4. 4. The rocks behind fossilization.
  5. 8. The opposite of an ancestor.