RS RS E E A A B B C C BL A STO BL A STO F F F F 2 2 R R E E AD E AD E RS RS STO STO F F F F 3 3 AD E AD E RS RS What Is the Respiratory System 4 Oxygen Goes In 6 14 Carbon Dioxide Goes Out Coughing and Sneezing 16 18 Breathing Is Automatic Glossary 22 23 To Learn More Index 24
What Is the Respiratory System 4
Make a wish and blow out the candles Your respiratory system makes this possible This system moves air into and out of your body The respiratory system takes oxygen from the air when you breathe in It moves carbon dioxide out of your body when you breathe out 5
