Which two theories claim that damage caused by unstable oxygen molecules precipitates the aging process?

Sound waves transmitted to David’s auditory nerve create __________. David’s interpretation of the sound waves as the school bell is __________.

The average life expectancy in 2017 for individuals born in the United States was over __________ years for women and over __________ years for men.

Cherilyn’s parents often ignore her emotions or try to explain that her problems should not upset her. Cherilyn’s parents can be described as

High schools in Edina, Minnesota, delayed class start time based on the finding that __________, the sleep hormone, is released approximately an hour later in older adolescents.

The component that the most effective weight loss programs include is

When engaging in cognitive tasks, older brains may compensate for the effects of aging with less

During adolescence, activity levels

Fifty-two-year-old Curtis is beginning to lose his ability to focus and maintain images on his retina. This condition is known as

Twin and adoption studies have found that heredity has __________ influence on temperament within a group of people.