Herz et al. (2007) found that smelling a perfume from your past activates the amygdala more than does looking at its bottle. in this study, the activation of the amygdala is the variable.

Which of the following  bestillustrates a negative reinforcer?               a.  copland gives up candy to stave off chronic acid indigestion.    b.  nancy learns that she prefers chocolate over vanilla.    c.  carmine changes his major to english lit after failing a math exam.    d.  on a hot day, lindberg always drinks lemonade.

Like savannah, this deep-water port in glynn county plays a major role in the economy of georgia.

The animals in the food web release into the environment, which plants then use for a) oxygen: respiration b) carbon dioxide: respiration c) water vapor: photosynthesis d) carbon dioxide: photosynthesis