Topic: Food Energy and Respiration Subtopic: Diseases of the respiratory system
Why should tissue paper or handkerchief used?
Answer: Tissue or handkerchief should be used to cover your mouth and nose in order to prevent the spread of 100,000 viruses that can reach up to a distance of 10 meters.
- What is an artery?
- What is affect of wind on transpiration?
- How can large molecules pass through digestive tract?
- Why large molecules cannot absorb into blood?
- What are properties of blood in arteries?
- What are antibodies?