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.
- What is size of white blood cell?
- What are by-products of respiration?
- Why is cross pollination better?
- What are initial effects of tobacco smoke?
- Why is reproduction important?
- What is activation energy?