Topic: Food Energy and Respiration Subtopic: Diseases of the respiratory system
Why is cold caused?
Answer: Cold is caused by neither bacteria nor fungi, it is caused by a special virus which enters the nose and throat breaking down the cells that line up these passages.
- What could be an example of diffusion?
- What is Emphysema?
- How are gases transported?
- Why we should not breathe through mouth?
- What are varicose veins?
- How does water and mineral salts reach xylem vessels?