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 photosynthesis?
- What are companion cells?
- What is active transport?
- How can large molecules pass through digestive tract?
- Where do gases enter and leave plant?
- What is our body made up of?