Evolution

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Across
  1. 4. is an early stage of animal development, before the fetus
  2. 6. anatomy comparing body parts; like bones to see if they have a common ancestor
  3. 7. shows the structure of organisms that lived long ago
Down
  1. 1. structure similar structures that came from a common ancestor
  2. 2. structure A structure that has no purpose
  3. 3. fossil a fossil that has been dated
  4. 5. Genes that control how bodies are structured