Trade barriers are a) physical features that stop or restrict trade. b) political boundaries that stop or restrict trade. c) anything that slows down or prevents trade between countries.

Psychologists studying infant memory want to determine at what age babies can remember specific events. an experimenter uses several puppets to demonstrate a series of actions while the infant watches. after a delay, the experimenter records how many of the actions the child imitates when playing with the puppets. what is the dependent variable?

When children heard an interesting story about a sympathetic and resourceful african-american child, the aim was to provide them with?

What is the name for the gaseous sphere surrounding earth