The consequences of particular diseases are features of

Peter, a 9-month-old infant, sees his mother's face above his crib, hears her singing to him, and feels the breeze from the fan in his room. Which of the following terms best explains the sensory input that he is receiving?

A) habituation B) dishabituation C) preferential looking D) intermodal perception

Photopigments are molecules that consist of an opsin and a ________

Fill in the blank with the appropriate word.