The percentage of the earths water that is fresh and available for drinking is 1%
For a surface storm system to intensity, the upper-level low (or trough) should be located to the WEST of the surface low.
A dead star does indeed becomes a black hole. In fact, even the sun will turn into a giant black hole and kill us all. (That's in millions of years, so something else will wipe out the human race)
Hope this helped! :P
