Define the following with examples.
(1) Vitamins:
(ii) Minerals:
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1)Vitamins are chemical substances that an organism require in limited amounts for maintaining a healthy body.
E.g- Vitamin A,C,D
2)A mineral is an element or chemical compound that is normally crystalline and that has been formed as a result of geological processes. Examples include quartz, feldspar minerals, calcite, sulfur and the clay minerals such as kaolinite and smectite.
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