it is most likely that hotter regions of the world witness more aggression than cooler regions because:

A. People in hotter regions have inherited the tendency to be more aggressive through their genetic make-up
B. Environmental temperature can modulate the expression of aggression in everyone
C. People in hotter regions have been socialized to behave in a more aggressive manner
D. People who live in hotter regions are less technologically…

Herman von Helmholtz (1821-94)?

A. Investigated the speed of neural impulses
B. Suggested that thought and movement do not occur instantaneously as previously believed, but that thought occur first, followed by movement
C. Made Significant contributions to sensory psychology, especially audition and vision
D. All of the above