________ are rounded masses of rock that form when molten lava erupts into cold water.
A. Pillow lava
B. Dunite dikes
C. Sheeted dikes
D. Gabbro mountains
E. Columnar basalts
Answer: A
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The rate of natural increase can be zero, as in ____________, where both the birth and death rate are 9 per 1,000.
A) australia B) germany C) austria D) switzerland E) the United States
The rain associated with a hurricane:
A) always leads to torrential flooding, no matter where the hurricane makes landfall. B) is only threatening in the immediate area where the hurricane makes landfall. C) can often bring benefits that outweigh the losses. D) is never associated with deaths in a hurricane.
Of the following, which is the most likely source for coarse particulate matter?
A) power generation B) residential fireplaces C) fossil fuel combustion in vehicles D) cars driving on unpaved roads
What geopolitical entity lost its diplomatic status when U.S. President Nixon began talks with China in 1971?
A) North Korea B) South Korea C) Taiwan D) Hong Kong E) none of the above