Alaska’s climate has been gradually warming over the past two decades, Over the same period the spruce-bark
beetle has killed unprecedented millions of acres of Alaska’s spruce trees. Clearly, this devastation is
attributable to the warming trend: not only have the recent warm summers in Alaska halved the time it takes a
beetle to develop from an egg. leading to a dramatic increase in the beetle’s population, but ____________.
Which of the following most logically completes the argument?
In the xy-plane, three of the four vertices of a parallelogram are the points (6, 8), (12, 8), and (12, 4). Which of
the following points could be the fourth vertex of the parallelogram?
Indicate all such points.