I believe the answer is: sleep debt
Sleep debt refers to accumulative effect that keep increasing as people keep not getting enough time for proper sleep. Studies show that in the long run, sleep debt would resulted in decreasing overall productivity and the actual effect of repaying sleep debt could only be felt if the debt is paid within one week period.
I believe the answer is: Learner directed
Learner directed classroom refers to the type of classroom that encourage students' habit of self-learning and observation.
Even though this type of method often shows results in slower rate, it would increase the likelihood of the students able to found their own subject of interest since the early age
<span>In Nazi, Germany they were enforced ghettos. Jewish people were forced to move into them to be kept separate from the general population and make them an easier target since they were already isolated from others. In the US, ghettos emerged because when people emigrated to the US they had a tendency to settle down among their own ethnicity, so the ghettos sprang up from that.</span>
I believe the constitution specifies that 9 out of the 13 states had to agree in order for it to become effective.