Answer: Decreased levels of melatonin
Explanation: Melatonin is a substance that is excreted at night and by which the brain sends signals that one should sleep, that is, a man / woman is feeling sleepy. When melatonin secretion decreases, the alertness increases, as is the case with Colby. Melatonin levels decrease at the base of the brain signal regardless of whether or not Colby slept enough the previous night. Feeling tired will induce some other receptors and consequent signals from the brain, but a natural decrease in melatonin throughout the day occurs normally.
It was Maj. General John Bankhead Magruder, a Confederate soldier who has helped retake (from the Confederation's point of view) Galveston during the civil war.
Scarcity is considered an economics problem with human wants or desires with limited resources, since we have limited resources not everyone can have what they want.
Those three primary rights are:
- <span>Personal security (which means that every person has the right to enjoy their life fully without being threaten/taken by others)
- Personal liberty (the right to choose the actions and directions of their life)
- Right of private property - (which is the right to obtain things such as house, land, factory, or other type of property)</span>
C. They made it easier to perform calculations.
