Topic: Food Energy and Respiration Subtopic: How we breathe?
What is diaphragm?
Answer: A diaphragm is a tough, dome-shaped sheet of muscles across the bottom of the chest. It helps to make the chest into an air tight box.
- What is deoxygenated blood?
- What is alveolus?
- What is job of red blood cells?
- Why is blood important?
- How are xylem and phloem arranged in roots?
- Why is it better to breathe through nose?