'Of the world's active volcanoes, about 60% are along the perimeter of this ocean'
Pacific
VOLCANOES: Of the worlds active volcanoes, about 60% are along the perimeter of this ocean
Of the world's active volcanoes, about 60% are along the perimeter of this ocean
Of the world's active volcanoes, about 60% are along the perimeter of this ocean
VOLCANOES
Pacific
VOLCANOES