Instinct is a. an unchanging, biologically inherited behavior pattern. b. most often applied to animal behavior. c. both a and b. d. neither a nor b.

To what kinds of messages might the brain respond to keep you balanced on one foot?

Which factors slowed population growth in china until the 1300? a. one child policy. b. urbanization c. epidemics. d. warfare

Which act was a response to three high-profile assassinations? a. the mailing of firearms act b. the national firearms act c. the gun control act d. the brady handgun violence prevention act