Answer:
<h2>Petroleum that is worthwhile extracting is usually found trapped in layers of permeable rocks by other layers of impermeable rock, but more recently reserves of gas and oil are being extracted from shale which is an impermeable rock but is porous in the sense that there are spaces (pores) within its structure in which ...</h2>
Lake Superior is the largest
Definently A because you can rule all the others out if you look at map
C, Boundaries limit sovereignty and determine the extent of a state's power within the global political system.
