Key stage 3 Science Exercise 1. A balanced diet will have the correct quantity of the __________ . 2. Carbohydrates are main ________ source for your body. 3. Proteins are essential for ________ and to repair damaged part. 4. Lipids perform as a store of _______ . 5. Fibre helps food _____ through your digestive system. 6. Your body always needs _______ . 7. People have _______ energy requirements. 8. The quantity of energy a person needs each day depends on _________ and level of activity. 9. Every cell in your body requires ________ . 10. The more active you are the more ________ your body will need. 11. An unbalanced ________ can create health problems. 12. Obesity can lead to health problems such as _________ and heart disease. 13. Some people do not get sufficient food to eat , this is ______. 14. The impacts of starvation include ________ in children. 15. Digestion is all about ________ food. 16. Proteins called _______ help in breaking down the food chemically
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