Nutrition. Magnesium and manganese are trace elements and are called as such because your body needs them in minute amounts. They are also called âmicronutrientsâ for the same reason. These elements are important for many metabolic processes, because they serve as cofactors in many bodily enzymatic reactions.ecause both magnesium and manganese are important to your body, you should include food sources of these elements in your daily meals in order to maintain good health. These elements, however, are different, and your body needs them in different amounts.
Yes, pc. in that context is an abbreviation of piece or pieces and it's very common, and perfectly correct.egarding the most correct abbreviation, that's probably something that's up for debate (alternatives could include 200 x and I've also seen 200 per) but 200 pc is as good as any and probably more common, from my own experience at least. share | improve this answer. answered Oct 4 '11 at 10:47. Waggers.
Abbreviations for Cooking Measurements. A Tbsp.,  tsp., c, qt, pt, pinch or a dash - What do they mean? When reading a recipe it is imperative to know what the measurement abbreviations stand for. If you mistake a tablespoon for teaspoon of an ingredient, you may ruin the dish. Baking requires precise measurement of the ingredients.