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 fertilization?
- Which vessel carries blood to lungs?
- What is heart transplant?
- Which harmful chemical is black in color?
- How does blood flow in arteries?
- What is flower?