USGS Water Resources of the United States http://water.usgs.gov/ Blue Planet Most of the Earth is covered with water, but most of this is in the oceans, and, being saltwater, is undrinkable.
(USGS Water Resources of the United States http://water.usgs.gov/ Blue Planet Most of the Earth; is covered; with water) (most of this; is; in the oceans) (being saltwater; is; undrinkable)
USGS Water Resources of the United States http://water.usgs.gov/ Blue Planet Most of the Earth most of this being saltwater
is covered is is
with water
in the oceans
undrinkable