It's from the hot rocks...example, volcano.
it is water cycle
70% or 80% of water covers the earths surface
3/4 of the earth's surface is water.
Indian Ocean covers 20% of water on the earths surface.
69%
about 30%
the sun
Water.
the water cycle
30%
Ground water.
71.13% of the earth is covered by water. Only 3% of that water is fresh water, the rest is salt water.