Rats become very hungry when they experience ________ levels of ________.

Vernix is a downy hair that covers the developing fetus

Indicate whether this statement is true or false.

What are the three characteristics of human cultures that differentiate them from animal cultures?

a) Social groups, family, and language b) Complexity, differentiation, and institutionalization c) Communication, groups, and institutionalization d) Language, groups, and social needs