This is the most fundamental reason why Earth currently has an atmosphere
A) strong winds keep the atmosphere moving horizontally above the Earth.
B) the Earth's magnetic field prevents gas molecules from escaping into space.
C) the Earth's gravity is strong enough to prevent most gases from escaping into space.
D) Earth's atmosphere is quite dense, and thus very viscous.
E) the solar wind constantly adds gas particles to the atmosphere.
C
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The name Greenland was adopted because ________
Fill in the blank(s) with correct word
The spread of fire depends on behavior within the fire itself and on ________.
A. topography B. the types of fuel, weather, and topography C. weather D. the soil type E. the types of fuel
Planetary geology focuses only on those planets with a rocky surface such as Venus and Mars
Indicate whether this statement is true or false.
People around the world have become more dependent on global markets for their food. As a result, recent U.S. government policies encouraging ________ have had a major negative effect on food availability
A) permaculture techniques B) integrated pest management C) increased herbicide use D) ethanol production E) organic farming