explain how smoking damages the respiratory s...

# Brief Explanations: Smoking exposes the respiratory system to harmful chemicals. These damage the cilia (tiny hair - like structures) that help clear mucus and debris, reducing their effectiveness. This leads to mucus buildup and makes the lungs more vulnerable to infections. The chemicals also irritate and inflame the airways and lung tissue over time. Two common conditions are chronic bronchitis, which is long - term inflammation of the bronchial tubes, and emphysema, where the air sacs in the lungs are damaged, reducing the lungs' ability to exchange gases. # Answer: Smoking damages the respiratory system by harming cilia, causing mucus buildup, and inflaming airways and lung tissue. Two conditions are chronic bronchitis and emphysema.