Topic: Body Transport System Subtopic: Diseases of the transport system
What are varicose veins?
Answer: Varicose veins are caused when the valves of the vein does not work properly. This causes whens to swell up.
- What is alveolus?
- What is stigma?
- What are fats and functions?
- What are raw products used by plants?
- What happens if excess juice is secreted in stomach?
- What is Emphysema?