1 2 3 1 _ _ _ 2 _ _ _ 3 _ _ _ ACROSS 1) a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of 2) the atmosphere and outer space as viewed from the earth 3) liquid excretory product DOWN 1) of southern europe; similar to but smaller than the adder 2) united states general who supervised the invasion of normandy and the defeat of nazi germany; 34th president of the united states (1890-1961) 3) the seed of the cereal grass ** Scroll down for solution. ** Are you sure you want to peek? air sky pee