Topic: Human Digestive System Subtopic: Absorption
What is faeces?
Answer: Food we eat often contains cellulose that our digestive system cannot digest. Undigested food and cellulose form faeces.
- What is oxygenated blood?
- What is food poisoning?
- What is chlorophyll?
- How are atria and ventricles separated?
- What happen when we exhale?
- What is semi-permaeable membrane?