Answer: water
Vitamin C – Wikipedia
An essential nutrient is a nutrient required for normal physiological function that cannot be synthesized in the body – either at all or in sufficient quantities – and thus must be obtained from a dietary source. Apart from water which is universally required for the maintenance of homeostasis in mammals essential nutrients are indispensable for various cellular metabolic processes and; for the maintenance and function of tissues and organs. In the case of humans there are nine amino acids two fatty acids thirteen vitamins
An essential nutrient is a nutrient required for normal physiological function that cannot be synthesized in the body – either at all or in sufficient quantities – and thus must be obtained from a dietary source. Apart from water which is universally required for the maintenance of homeostasis in mammals essential nutrients are indispensable for various cellular metab…