<span>The correct answer is - nicotine can temporarily increase norepinephrine, a neurotransmitter scarce in people with depression.
Before Nathaniel started smoking, he was severely depressed, which is in part a biological thing (not only mental) due to his lack of norepinephrine. However, when he started smoking, his levels of this neurotransmitter rose, which is why he didn't feel as depressed as he used to be, but in turn, he became addicted to nicotine. </span>
<span>Wyatt Earp and Doc Holliday were the two officers made famous by the OK Corral shootout. When the Cowboys threatened their lives several times, the deputy officer Doc Holliday supported Wyatt Earp. The two officers participated in a 30 second shootout. All of the assailants who came against them got killed.</span>
Democratic city-states allowed citizens to vote
Answer:
Conquistadors or conquistadores were the invaders, knights, soldiers, and explorers of the Spanish and the Portuguese Empires.