Realiza una comparación de la peste negra con la situación actual mundial.

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.

What would be the most likely consequence to society if citizens began refusing to fulfill their citizenship responsibilities a) people would have more free time because they would have fewer social obligations b) people would find that society was able to look after itself with the of civic participation c) people would face the threat of losing their individual rights and freedoms d) people would benefit from the direction of strong leaders who would guard their freedoms

Acar is an example of a a. durable good. b. nondurable good. c. capital good. d. service.