Water should be considered a macro-nutrient as opposed to some nursing textbook that categorizes water as a micronutrient. It is necessary to drink eight to ten 8-oz amount of water daily to help...
Essential micronutrients include iodine, iron, vitamin A and folate.
A nutrient is a substance used in an organism's metabolism which must be taken in from the environment. Non-autotrophic...
Cobalt is a nutrient because it is necessary to human life; it is called a micronutrient because the necessary amount of it is very small, compared with the total mass of an average diet.