nt ??? ??? ??? all of the following are classified as macronutrients except calcium ??? ??? ??? which of the following is an example of a macronutrient protein ??? ??? ??? which of the following is classified as a micronutrient iron ??? ??? ??? which of the following is an organic compound Vitamin C ??? ??? ??? An essential nutrient is one that cannot be made in sufficient quantities by the body ?