Problem 7
During a trip to the grocery store, your friend wants to buy some bottled water. Some brands promote the fact that their product is artesian. Other brands boast that their water comes from a spring. Your friend asks, "Is artesian water or spring water necessarily better than water from other sources?" How would you answer?
Problem 8
What is the likely difference between an intermittent stream (one that flows off and on) and a stream that flows all the time, even during extended dry periods?
