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Minerals are elements originating from the Earth that play an essential role in life. They cannot be made by living organisms. Plants obtain them via soil. Animals obtain them via eating plants and animals and drinking water. Macrominerals are those needed in large amounts (more than 100 mg per day), microminerals are those needed in small amounts (1–100 mg per day), and trace minerals are those needed in very small amounts (less than 1 mg per day).

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