Stretching from the hills of central Alabama to the ice-choked edge of Newfoundland, they harbor fertile hardwood forests alive with wildflowers, weird bogs and Arctic tundra where caribou and even polar bears roam.
(caribou and even polar bears; roam; L:wildflowers, weird bogs and Arctic tundra) (they; harbor; fertile hardwood forests; alive with wildflowers, weird bogs and Arctic tundra)
caribou and even polar bears they
roam harbor
L:wildflowers, weird bogs and Arctic tundra
fertile hardwood forests alive with wildflowers, weird bogs and Arctic tundra