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This fact sheet provides an overview of the gases emitted by volcanoes, which consist mostly of water vapor, carbon dioxide, and sulfur dioxide. Topics include reasons for studying them, potential hazards, methods for studying them, and some facts about the gases emitted by the eruption of Mount St. Helens. A downloadable, printable version is available.
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This
report
discusses
the
spatial
distribution
of
the
largest,
most
damaging
floods
in
the
United
States
and
some
of
the
factors
that
affect
this
distribution.
Topics
include
regional
climatology,
topography,
and
basin
size.
A
discussion
of
climatological
factors
includes
the
general
northward
trend
of
decreasing
atmospheric
moisture;
proximity
to
oceanic
moisture
sources
such
as
the
Pacific
Ocean
...
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This
portal
links
selected
United
States
Geological
Survey
(USGS)
online
resources
to
an
established
list
of
content
standards
for
the
state
of
California.
Standards
data
is
extracted
from
state
documents
'California
Content
Standards
for
California
Public
Schools:
Kindergarten
Through
Grade
Twelve'
with
consideration
of
'Science
Framework
for
California
Public
Schools:
Kindergarten
Through
Grade
...
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