1 2 3 1 _ _ _ 2 _ _ _ 3 _ _ _ ACROSS 1) the residue that remains when something is burned 2) a small cube with 1 to 6 spots on the six faces; used in gambling to generate random numbers 3) a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium DOWN 1) an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia 2) be seated 3) a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in texas and kansas) ** Scroll down for solution. ** Are you sure you want to peek? ash die ats