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Lungs throat - PowerPoint PPT Presentation

5 th Grade Chapter 3 Notes Continued

5 th Grade Chapter 3 Notes Continued. Respiratory, Digestive and Urinary systems. Respiratory System. Mucus. ____________ is a sticky, thick fluid that traps dust, germs, and other things that may be in the air. 1. Air enters through the _______or ________.

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Lungs throat - PowerPoint PPT Presentation

5 th Grade Chapter 3 Notes Continued