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 blood?
- What are varicose veins?
- How can phloem be described?
- Where is blood taken after lungs?
- How many parts does flower has?
- What gas is present in cigarette?