Topic: Human Digestive System Subtopic: Absorption
What is ratio of water and bacteria in faeces?
Answer: About two-third of the faeces is water, and half of the remaining is bacteria, mainly dead bacteria.
- Where does bacteria in faeces come from?
- What is pulse?
- What happen when we exhale?
- How minerals salts are taken up?
- What are proteins and functions?
- How does air reach blood vessels?