2
Its around 30% left in the lungs
How much fresh water left in the world for our future generation and how we can save it.
10 percent of the world is left handed.
2 Migratory birds are left.
There are only about 5900 piping plovers left in the world.
5140 trillion tonnes. I got this from http://blog.phiffer.org/post/27344630/left-all-the-water-in-the-world-1-4087-billion
About 50
However much air it has left in it's lungs, or how much it takes to expel unwanted water from it's system. The amount greatly varies.
The world will never know the answer to that until it is all gone
about 5 i think
200 years