The ________ is usually inactive, especially during sleep, but it emits bursts of impulses in response to meaningful events

When the dog sat at your feet and whined during breakfast one morning, you fed him. As a result, he sat at your feet and whined during breakfast the next morning. The consequence for the dog's whining consisted of the ___ of a stimulus, and his behavior of whining subsequently _______ in frequency; therefore, is an example of _______ reinforcement.

Fill in the blank(s) with the appropriate word(s).

Beginning at about age 38, most women find that:

a. their ovaries release fewer ova and with greater irregularity b. they begin to enter menopause c. they experience a "second menarche" d. their ovaries develop a new supply of ova