By triggering the release of epinephrine and norepinephrine, boosts alertness and diminishes appetite. ghrelin heroin nicotine alcohol

The correct option is: C. Nicotine

Explanation:

Nicotine is one of the commonly abused drugs, which is highly addictive in nature. It stimulates the release of epinephrine or adrenaline and norepinephrine or noradrenaline, in the bloodstream which results in an increased heart rate, respiration and blood pressure, diminishes appetite and boosts the cognitive performance and alertness.  

answer: the answer is d.

explanation: this is because when you exercise you make your muscle produce a certain liquid, that does not evaporate it.   also when you exercise you do not reduce muscle fiber.   and it does not really control your twitch that much.

Chemotherapy works by stopping or slowing the growth of cancer cells, which grow and divide quickly. It can also harm healthy cells that divide quickly, such as those that line your mouth and intestines or cause your hair to grow. Damage to healthy cells may cause side effects. Chemotherapy kills cells that are in the process of splitting into 2 new cells. Because cancer cells divide much more often than most normal cells, chemotherapy is much more likely to kill them. Some drugs kill dividing cells by damaging the part of the cell's control centre that makes it divide.