I heard something like "seven times" before but i'm not to sure if it's fact.
2006-09-02 19:30:03 · 4 answers · asked by mad_maggit 1 in Science & Mathematics ➔ Other - Science
It's a simple engineering calculation if you have the data. How much water is on earth available to the water cycle? How many humans have ever lived, for what average lifespan? How much water does a human drink each day?
On the space station, it's nearly equal to the number of days of operation.
2006-09-02 19:43:38 · answer #1 · answered by Frank N 7 · 0⤊ 1⤋
impossible...or nearly impossible. You can pour cup of water into the ocean and 1 year later take another sample cup from the ocean, and still, the cup will contain molecules of water from last year. That is how small molecules are. Therefore to pass through the human body again even once, you'd have to drink more than every cup in the ocean(vapors, soil, ocean, etc)
2006-09-03 02:37:39 · answer #2 · answered by Ilooklikemyavatar..exactly 3 · 0⤊ 0⤋
An animal perhaps, humans are quit scarce esp millions years ago.
I heard something like in every breath you take an air "molecule" that Jesus breathed is in you, statistically.This I find more probable we breathe a lot more than we pee
2006-09-03 02:44:14 · answer #3 · answered by Patrick Bateman 3 · 0⤊ 0⤋
Never in a human lifetime.
But you probably breath millions of atoms from Caesar's last breath on every breath.
2006-09-03 03:43:42 · answer #4 · answered by A professor (thus usually wrong) 3 · 0⤊ 0⤋