Evolution

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Across
  1. 3. Structures that very different animals have in common.
  2. 5. What law states that old rock is deeper than new rock?
Down
  1. 1. What anatomy compares body parts to find a common ancestor.
  2. 2. Record showing database of all _______ and the approximate time of it.
  3. 4. Controls how body's are formed.
  4. 6. Early stage of animal development before fetus.