After studying the graph you posted and doing some research there are several tectonic features beneath the moving Pacific Plate that caused the volcanoes to form in both the Loa and Kea trends. A few of the acceptable answers are rising magma, Hawaii Hot Spot, mantle plume, and a hot spot.
Answer:
The United States is spread across six time zones. From west to east, they are Hawaii, Alaska, Pacific, Mountain, Central, and Eastern. Imagine that you live in Philadelphia, Pennsylvania at 75 degrees west longitude.
Explanation:
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A giant asteroid slamming into the earth