protein
fat
Water
which nutrient supplies the body with the most calories
When it's healthy! (:
Based upon how fast you can loose consciousness when deprived, oxygen is the most indispensable nutrient.
carbohydrates
How the hell do I know!!!!!!!!!!!!!!! ()-l-/\
An important nutrient would be beta carotene, which the body uses to make Vitamin A.
fat
vitamin c
fat
Most of the nutrients are soaked up by the small intestine through villi, I believe.
I believe that is fat.