Respiratory System Crossword Puzzle

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Across
  1. 1. _____ cancer is responsible for the most cancer deaths in the world.
  2. 6. _____ system is a system of tissues and organs that contains the lungs.
  3. 7. The respiratory system helps you _____.
  4. 8. People with asthma use bronchodilators, also known as _____.
Down
  1. 2. The _____ exhange is crucial for life.
  2. 3. In order to prevent lung damage, don't _____.
  3. 4. The lungs are the only organ that can float on _____.
  4. 5. _____ smoke can narrow air passages, cause inflammation in the lungs, and is the leading cause of lung cancer and COPD.
  5. 6. The lungs are protected by the _____.