- The approximate volume of water on Earth is 1.338 Billion cu.km
- Earth regularly intercepts a number of space objects as meteors
- During the course of their descent through the atmosphere some burn totally to ash
Larger bodies may make it through the atmosphere burning off a part of their content which may remain part of the atmosphere, or make it to the surface.
- Does a meteor (subject to it's composition) add to, or deduct from the water volume on Earth?
- What is the approximate volume of water acquired/lost annually to such extra-terrestrial bodies by Earth?