My name is jeff and idk about the answer
<span>D) the Mass of water needs to be in a closed system to control the boiling. With an open system, you can no longer measure the water vapor output and be sure that the water vapor in the bottle is equal to the water vapor in the air or beyond. It is only through the closed system that you can measure the volume, the mass difference and ensure that both are in equilibrium</span>
The least industrialized regions of Europe are practically where the poorest countries are, so the lest industrialized are the western, central and eastern parts of the Balkans, and the central part of Eastern Europe. So in the Balkans we are talking about about Macedonia, Bulgaria, Serbia, Montenegro, Albania and Kosovo, and in in eastern Europe it's Ukraine, Moldova, and Belarus.
The answer is faults because when divergent boundaries occur, the tectonic plates move away from each other, therefor creating a fault in the earths crust.
