According to the text, about percent of youths who use more serious drugs started on marijuana.

Derek is working on a thesis on the changes in social behavior in the context of finding partners. an important part of his study concerns the various practices followed by males and females over the course of generations and how they have gradually transformed into our current social norms. derek can be called a(n) psychologist. (tb75)\

How did the romanov dynasty increase russia's power? need many details, you!

Endogamy is marriage within one’s own social category. select the best answer from the choices provided true or false