Which vitamin can be made from the amino acid tryptophan?
a. riboflavin
b. niacin
c. thiamin
d. pantothenic acid

The correct answer is Niacin.

Niacin is one of the eight vitamins that make the B complex. It is also known as as nicotinic acid and vitamin B-3. It is a water soluble vitamin which the body cannot store. Niacin can be found in common foods, beets, fish, yeast based food. Niacin can be synthesized from the amino acid Tryptophan.

you did not attach the discourse, but i assume it to be the discourse on the origin and basis of inequality among men (the original titile in french is: "discours sur l'origine et les fondements de l'inégalité parmi les hommes"), also know as "second discourse". in this discourse, jean-jacques rousseau emphasizes that private property is the basis of all inequalities.

therefore, what enabled the old regime to maintain as long as it did was private property.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.