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.
- Where are dead red blood cells broken?
- Why blood is medium?
- What is ratio of water and bacteria in faeces?
- What is diffusion?
- What are sepals?
- How are these parts arranged?