Answer:
The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, or exhalation). This exchange of oxygen and carbon dioxide is called respiration.
Explanation:
Tips for a healthy respiratory system
avoid harmful environmental factors such as smoke, dusts and chemicals. exercise (check with your doctor first if you have a health condition), preferably away from busy roads with high air pollution. wash your hands regularly to prevent infections. eat a healthy, vitamin-rich diet.
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