define nutrition. why is it necessary
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Nutrition, the assimilation by living organisms of food materials that enable them to grow, maintain themselves, and reproduce.
nutrition is a necessity for an organism. nutrition is the process of obtaining and utilizing food for survival. It is required for the following purposes-
(a) It provides energy for the various metabolic processes in the body.
(b) It is essential for the growth of new cells and repair or replacement of worn out cells.
(c) It is needed to develop resistance against various diseases.
(d) it provides substrate for energy production which is utilized in the different life process for survival.
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