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.
- Why is heart useful?
- How does blood flow in veins?
- What are effects of Nicotine?
- How are xylem and phloem arranged in roots?
- What is job of red blood cells?
- What is chlorophyll?
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