A(n) ____________________ is a large parcel of air, sometimes subcontinental in size, that may move over Earth's surface as a distinct, relatively homogeneous entity
Fill in the blank(s) with correct word
air mass
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What was the name of the official United States policy that held that the United States would not tolerate European military involvement in the Western Hemisphere?
A) the New Deal B) Manifest Destiny C) the U.S. Constitution D) the Monroe Doctrine E) the Great Society
The lowest temperature ever recorded at the Earth's surface was in
A) The Yukon Territory of Canada. B) Inner Mongolia. C) Mt. Washington. D) Antarctica.
Over the last 90 years in the United States,
A) the total area of forests has been reduced by about 90%. B) the total area of forests has increased in size. C) most national forests have been clear-cut and converted to agriculture. D) most national forests have been replaced by commercial development.
Volcanic domes commonly are partially destroyed when
A. fast-moving, low-viscosity lava carries away part of the dome. B. steep parts of the dome collapse and cause small pyroclastic flows. C. the center of the dome collapses, forming a composite volcano. D. gases are released slowly out the top of the dome, dissolving it. E. All of these choices are correct.