Major organ system

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Across
  1. 5. releases waste from the body
  2. 6. protects our head
  3. 7. anchor's the plant
  4. 8. biggest bone in our body
  5. 9. smallest bone in our body
Down
  1. 1. respiratory system
  2. 2. broadest bone in the human body
  3. 3. circulatory system
  4. 4. contract to become shorter
  5. 8. thinnest bone in the body