Vitamins
Vitamins are a very interesting and informative essay which gives us a precise, exact and simple picture of one of the most important ingredients of human diet. He wants to show the importance of balanced diet for the growth of human body. Vitamins are an essential part of our food. Lack of different kinds of vitamins in our diet causes different diseases. This essay is an extract from his book Human Physiology. It is written in his typical plain prose style. Dr. Walker has a neat, simple, straightforward style which suits his purpose exactly. He points out various sources of Vitamins A, B, C, D and E.
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