The goal of political science is: description and explanation

not usually stated

rational and empirical

explanation and prediction

Air masses are characterized by various properties including temperature humidity air temperature pressure and wind speed . which of the following air masses is associated with low relative humidity and high temperature

Stages 1 and 4 of the demographic transition are similar in that

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .