Topic: Food Energy and Respiration Subtopic: Diseases of the respiratory system
What is Asthma?
Answer: Asthma is a disease in which muscles of the bronchi contract making it difficult for the person to inhale air.
Learn also:
- What is flu?
- What causes smoker to cough?
- What is digestion?
- Why is it better to breathe through nose?
- What is ovule?
- What is wilting?