"Essential nutrients" are unable to be synthesized internally (either at all, or in sufficient quantities), and so must be consumed by an organism from its environment.
http://en.wikipedia.org/wiki/Nutrient#Essential_and_non-essential_nutrients
Growth factor
Xylem
Proteins are synthesized from amino acids.
Sugar is not an organism. Sugar is an organic compound.
Its consists of some organic substances
Plantae
Vitamins are an organic compound required by an organism as vital nutrient in limited amounts. They can be found in Grains,Vegetables,Fruits, Milk, Meat, Beans,Oils, which is the main Food Group. An organic chemical compound is called a vitamin when it cannot be synthesized in sufficient quantities by an organism.
amphetamine is inorganic. it was synthesized by a chemist.
Xylem
no
urea
Proteins are synthesized from amino acids.
- Sodium chloride is not a nutrient - Sodium chloride is an inorganic compound
ammonium cyanate
organic
absorbed,released
To make organic compounds
Saliva