Air has
a. a fixed volume but no fixed shape.
b. no fixed volume or shape.
c. a fixed shape but no fixed volume.
d. both a fixed shape and fixed volume.

2. cheryl hears a new song on the radio every day during the week on her commute to work. surprisingly, when the song comes on at a party on saturday night, she knows most of the words without trying. describe the three ways that we use cognition to learn without reinforcement. which type of cognitive learning without reinforcement best explains how cheryl knew the song lyrics? explain your answer.