It is H2O. The notation for water is the same wherever in the universe it is.
it is water cycle
70% or 80% of water covers the earths surface
3/4 of the earth's surface is water.
69%
326 million gallons in scientific notation = 3.26 x 108 gallons.
about 30%
the sun
Water.
Ground water.
the water cycle
71.13% of the earth is covered by water. Only 3% of that water is fresh water, the rest is salt water.
very small