Dinosaurs died off during a mass extinction because .
A. they were hit by a giant asteroid
B. the ocean level rose and they drowned
C. a climate change caused plants to die
D. volcanic eruptions engulfed them in lava flows

In which way does nicotine cause addiction? by stimulating the brain's pleasure center by increasing blood-sugar levels by decreasing dopamine levels by reducing depression and anxiety

Bennett has trouble interacting with other students in school lately. he has become frustrated easily when asked to work in groups, and he has been withdrawing from class discussions. his teacher is worried about his

You are assessing an 86-year-old postoperative patient who has an unexpressive, stoic demeanor. when you enter the room, the patient is curled into the fetal position and your assessment reveals that his vital signs are elevated and he is diaphoretic. you ask the patient what his pain level is on a 0-to-10 scale that you explained to the patient prior to surgery. the patient indicates a pain level of “three or so.” you review your pain-management orders and find that all medications are ordered prn. how would you treat this patient's pain?