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This site describes the distribution and movement of water around, through, and above the Earth as water vapor, liquid water, and ice, with emphasis on the water cycle (hydrologic cycle). It is part of the U.S. Geological Survey's Water Science for Schools website. Tables and graphs are provided. The water cycle graphic is available in several languages.
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This site is provided by the Mineral Resources Program (MRP) of the U.S. Geologic Survey. It is an online geographic information system which covers Earth and the United States. Layers which can be turned on and off feature information on mineral resources, soils, sediments, geologic features, cultural features, land cover, elevation, gravity data, and magnetic data.
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This
is
the
homepage
of
the
U.S.
Global
Research
Program
(USGCRP),
an
initiative
to
support
research
on
the
interactions
of
natural
and
human-induced
changes
in
the
global
environment
and
their
implications
for
society.
Visitors
can
study
overviews
of
the
topics
of
greatest
interest
to
the
USGCRP,
which
include
atmospheric
composition,
climatic
variability
and
change,
global
cycles
for
carbon
and
...
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