Iron micronutrient IS NOT one of the most common elements in living things (Option a).
- Micronutrients can be defined as nutrients that are required by living things in very small amounts.
- Micronutrients include vitamins and minerals.
- Iron (Fe) is a micronutrient (i.e., a mineral) that is needed in small amounts. In adult humans, the average daily recommended intake of iron is 8 to 18 milligrams (mg).
- Hydrogen (H), nitrogen (N), oxygen (O), and carbon (C) are all major constituents of macronutrients such as carbohydrates, lipids, proteins and nucleic acids.
In conclusion, iron micronutrient IS NOT one of the most common elements in living things (Option a).
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