Topic: Food Energy and Respiration Subtopic: Diseases of the respiratory system
What are some major causes of asthma?
Answer: Some major causes of asthma include pets, tobacco smoke, cold air and even laughing and exercising can cause asthma to an ordinary person.
- From where does roots take up oxygen?
- After chewing where does food go?
- Why does constipation occur?
- What are xylem and phloem?
- Where is faeces stored?
- How are atria and ventricles separated?