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.
- How is air processed in nose?
- How can cold prevented?
- What is disadvantage of self-pollination?
- What are companion cells?
- Whah happens in diarrhea and when it stops?
- Why is reproduction important?