In the embryonic stage, the nervous system begins to function around the ___ week, and weak brain waves begin to be produced

If you were on a submarine deep in the ocean with artificial light that was constant at all times, what would happen to your rhythm of wakefulness and sleepiness? a. You would feel wakeful and sleepy on an irregular, unpredictable schedule

b. You would feel a constant state of low-alertness wakefulness. c. You would continue feeling wakeful and sleepy on a nearly 24-hour basis. d. You would feel sleepy after any physical exertion, and wakeful about 8 hours later.

The use of marginalization or separation in adapting to a new culture usually produces __________ stress

a. high b. moderate c. low d. very low to nonexistent amounts of