Underline details about the factors that helped lead to a population change in Europe in the High Middle Ages. Then, on a separate sheet of paper, explain whether human activity or natural forces were the main reason for population change and why.

Atank contains 240 liters of fluid in which 10 grams of salt is dissolved. brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 l/min; the well-mixed solution is pumped out at the same rate. find the number a(t) of grams of salt in the tank at time t.

Which solution is an example of a nonelectrolyte? a. iodine in hexane b. sodium nitrate in waterc. acetic acid in waterd. hydrogen chloride in water

How do you lengthen a pattern piece? (family and consumer science, sewing)