Question 1
For adolescents, __________ is an environmental factor that appears to worsen the sleep-wake shift
.◦
starting school later in middle and high school than in elementary school
◦ using melatonin supplements
◦ staring at lighted electronic devices late at night
◦ parents telling them when to go to bed
Question 2
For boys, the first production of sperm is called __________.
◦ a secular trend
◦ secondary sex characteristics
◦ spermarche
◦ menarche