What are naturally occurring, inorganic, crystalline solids that have definite physical and chemical properties?
A)rocks
B)minerals
C)stalactites
D)stalagmites
E)lithified deposits
B
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The shape of a country may affect its ability to consolidate its territory and control circulation across its borders
Indicate whether the statement is true or false.
The most cleanly burning fossil fuel available that produces the least pollutants is
A) coal, usually found in deposits deep within the Earth. B) kerosene, found in deposits associated with oil wells. C) natural gas, usually found in deposits associated with oil. D) nuclear energy, produced from rocks and minerals within the Earth.
The longest days of the year in the Southern Hemisphere are experienced during the Northern Hemisphere's
A) Summer solstice. B) Spring equinox. C) Winter solstice. D) earlier than during daylight savings time only.
Calderas are formed when ____
A)low-viscosity magma flows out into very large areas and cools B)pyroclastic flows mix with lava flows C)the volcanic pipe is plugged and the increase in pressure causes a huge explosion D)part of a magma chamber drains and the mountain's summit collapses into the vacated space below E)large explosions at the base of a volcano cause the volcano to collapse