Why is there less seasonal change in temperature at the equator than at the north and south poles?

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)\

Which group received the right to vote last

What are three voluntary behaviors that is not control by results?