List three reasons a community needs water

What words in the preamble to the constitution reflect the principle of popular sovereignty

The principle of checks and balances is based on the notion that

Around the third week of a college class, a professor decides she’s had enough, is tired of dealing with bureaucracies, and wants out. so one day, instead of coming to class, she flies to tahiti and sells souvenirs on the beach. if this happened, the college would simply assign a substitute to finish the course. what does this tell you about the nature of the authority wielded by a professor?