Some of the world's hypercities and megacities are merging into vast urban ____.
A. marked regions
B. megaregions
C. mini-cities
D. neighborhoods
E. ultracities
Answer: B
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Given the above diagram, describe what happens electronically between these two molecules.
A. Oxygen W becomes slightly positively charged due to the oxygen molecule. B. Oxygen W becomes slightly negatively charged due to the oxygen molecule. C. Oxygen A becomes slightly positively charged due to the electrons on the water molecule. D. Oxygen B becomes slightly positively charged due to the electrons on the water molecule. E. none of the above
Vilhelm Bjerknes
A) helped discredit the Norwegian cyclone model. B) founded the Norwegian Geophysical Institute. C) developed the polar front theory in order to explain the occurrence of hurricanes. D) was a tragic victim of the fighting in World War I.
What evidence first indicated to scientists that the continents were once connected?
a. the apparent jigsaw-like fit of continents together, as in the case of South America and Africa b. the distribution of coal from tropical swamps of the past among North America, Europe, northern Africa, and Asia c. deformed igneous rocks in Brazil that highly resembled similar rocks in Africa d. the presence of Glossopterison fossils on five different continents e. the evidence of past isthmian links which allowed land animals to reach other landmasses across the ocean
The most important natural source for the formation of acid for rock weathering at the Earth's surface is dissolved ________.
A. hydrothermal effluent B. seawater C. carbon dioxide D. mantle plumes E. comets