Bodies of water often were used to create borders EX: in the eastern united states the states borders are rivers because it is easier than making imaginary borders
Answer:
the distance between dallas and nyc is 10.3 or the square root of 106
I'm not so good at science but I believe just from the Internet and common sense that it could be found in Hawaii, Yellowstone, Iceland, and (not completely sure for last one) but maybe Pompeii. I know the first 3 are most likely correct but I'm not completely sure about Pompeii. Just look it up, lol
The answer is: [A]: troposphere .
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