They are required in less amount because their role is regulatory or protective.
Example: Vitamins and Minerals
MACRONUTRIENTS
Annotations:
They are required in large amount because their role is to provide energy & raw material for growth and repair.
ON THE BASIS OF THEIR CHEMICAL COMPOSITION
ORGANIC
Annotations:
They are the compounds of
C-H-O.
Here the presence of C & H is must.
They are generally naturally occurring.
Examples: Carbohydrates, Proteins, Lipids, Vitamins