Crossword

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Across
  1. 3. Is the main organ of the respiratory system
  2. 4. Is the main organ of circular system
  3. 6. The main organs are muscles
  4. 7. The main organ is the heart
  5. 10. The main organ are the ovaries
Down
  1. 1. The main organs are bones
  2. 2. The main organ is the intestine
  3. 5. The main organ are lungs
  4. 8. The main organ is the brain
  5. 9. The main organ are the cornells