         Sefitence: 1:-Could: a: nitlear borhb . trigger tha’ Yellowstone  supervolcano? ffs, would it tead to'the total ‘annihilation of  the United States?    Senterice 2: f someone were:to"detoriate a nuciear borib in  Yellowstone. ‘National Park; then'-can’ that ‘trigger’ a ‘super  vyalcano? , 5