Topic: Food Energy and Respiration Subtopic: Diseases of the respiratory system
What causes smoker to cough?
Answer: A smoker coughs when excess mucus is collected in bronchioles. The smokers' cough is very harmful for the respiratory system.
- What is plasma?
- What are products of respiration?
- Why does constipation occur?
- Where does bacteria in faeces come from?
- What is Emphysema?
- What are initial effects of tobacco smoke?