Topic: Food Energy and Respiration Subtopic: Introduction
What is alveolus?
Answer: Alveolus is also known as air sac. Alveolus is the origin where gaseous exchange takes place. Blood vessels are present in alveolus.
- After chewing where does food go?
- Why should tissue paper or handkerchief used?
- What is deoxygenated blood?
- How can xylem be described?
- What is egestion?
- What is faulty pacemaker?