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| The Human Body Page 3 |
Q. 21. Can we control our hunger and thirst?
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Q. 22. What are psychic happenings?
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Q. 23. How do calories make us fat?
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Q. 24. What is protein?
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Q. 25. Do we need to take extra vitamins?
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Q. 26. Why does the body use up vitamin C?
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Q. 27. Why does a fan make you feel cooler?
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Q. 28. Is all human blood the same?
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Q. 29. What is the Rh factor?
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Q. 30. How do blood banks work?
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