Topic: Human Digestive System Subtopic: Introduction
What are fats and functions?
Answer: Fats are stored as layers of insulation under the skin. fats produce twice as much energy as carbohydrates. About quarter of our energy we use each day comes from fats.
- How does air reach blood vessels?
- What are by-products of respiration?
- What is inside heart?
- What is ovary?
- What is Asthma?
- What are capillaries?