Water is made up of
two parts Hydrogen and
one part Oxygen...H2O.
Water is the most
common substance on
Earth...but almost all of
it -- 97% -- is salty and
undrinkable. Two percent
of it is frozen in glaciers
and ice caps...so that
leaves only the remaining
1% for us to drink!
The same water on our
planet today was here
when the dinosaurs drank
it! It has been recycled
millions of times!
Water is the only
substance on Earth that
exists in all three forms
-- as a gas (steam), a
liquid, and as a solid (ice).