Select the sentence that is correctly punctuated. in health class we studied these systems endocrine, circulatory, and nervous. in health class we studied these systems: endocrine, circulatory, and nervous.

often a noun phrase is just a noun or a pronoun:

people like to have money.

i am tired.

it is getting late.

voracity is the noun corresponding to the adjective voracious, which means (1) eager to consume a great amount of food, or (2) marked by an insatiable appetite. veracity is far more common than the rare voracity, so the latter is sometimes used in place of the former.