Body Puzzle

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Across
  1. 1. Another word for windpipe?
  2. 5. Holds all DNA in a cell?
  3. 7. Which part in the cell protects it?
  4. 9. Which two organs aren't the same size?
Down
  1. 2. Which bones protect the lungs?
  2. 3. Where everything is made in a cell?
  3. 4. Takes blood around body?
  4. 6. Which organ less than a pound?
  5. 8. What liquid accounts for approx. 7% of human body weight?