What Happens to the Breath of Man and Animal?

Both men and beasts have the same breath. They both breathe air, and they both go to the same place. As one dies, so dies the other. And man has no advantage over the beasts. For all is vanity. All go to one place. All are from the dust and all turned to dust again. Who knows whether the spirit of man goes upward and spirit of the beast goes down to the earth?"