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atmosphere
subjectfact 
atmospherehas composition 78% nitrogen and 21% oxygen (with 1% of other gases) by volumehas source: Abbot, D. 1984 Astronomers, Peter Bedrick Books, New York, 2001-09-27 09:31:58.0
has equivalent 14.07 lb in-2has source: Jerrard, H.G., McNeill, D.B. 1992 Dictionary of Scientific Units, Chapman and Hall, 2001-09-27 09:32:44.0
has equivalent 101325 pascalshas source: Jerrard, H.G., McNeill, D.B. 1992 Dictionary of Scientific Units, Chapman and Hall, 2001-09-27 09:32:44.0
has equivalent 760 torrhas source: Jerrard, H.G., McNeill, D.B. 1992 Dictionary of Scientific Units, Chapman and Hall, 2001-09-27 09:32:44.0
has equivalent 1.013 barshas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:44.0
is a part of Earth2001-09-27 09:31:58.0
has definition Mantle of gases round a star planet or moon, sometimes even forming the apparent surface of the body. For a body to retain an atmosphere depends on the body's gravity, and the temperature and composition of the gases. Mean atmospheric pressure at the surface is 10330 kg/m2, and is also referred to as atmosphere.has source: Abbot, D. 1984 Astronomers, Peter Bedrick Books, New York, 2001-09-27 09:31:58.0
has definition A unit of pressure.has source: Jerrard, H.G., McNeill, D.B. 1992 Dictionary of Scientific Units, Chapman and Hall, 2001-09-27 09:32:44.0
is an instance of pressure unit2001-09-27 09:32:44.0
pressure unitis a unit of pressure2001-09-27 09:32:44.0
unithas historical origin2001-09-27 09:32:42.0
represents2001-09-27 09:32:42.0