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.
- In large trees how gases are exchanged?
- Which blood protein is found in plasma?
- How are gases exchanged in plants?
- How can constipation be prevented?
- What is mechanical process in digestion?
- What is food poisoning?