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 belieev the answer is: <span>the oncoming car looks like its not moving
When the car look like its not moving from the perspective of other driver, it is most likely that the car is run at a very low speed.
In this situation, we can conclude that it is safe to make the pass because that car wouldn't achieve enough acceleration to hit us even if the driver somehow step the gas all the way in.</span>
The Mexican government encouraged Americans to settle in Texas to prevent border violations form horse thieves and to protect the territory from Native American attacks. Also by encouraging American settlers to come to Texas, the farmers could purchase farm implements from the US to increase the flow of manufactured goods into Mexico.
<span>One should be careful about what is said to another person unless you have that type of relationship. I find that I can only freely discuss things with people I know and trust and consider very good friends.</span>