All of the following could enhance a single-celled thunderstorm EXCEPT
A. extensive areas of cloud mergers between adjacent clouds.
B. cool surface and a downdraft dominated cloud.
C. vertical wind shear keeping precipitation separated from the uplift zone.
D. hot surface and an updraft dominated cloud.
Answer: B
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Looking at global temperature distributions, it is seen that:
A) temperatures over land are colder than those over water at the same latitude in winter. B) temperatures increase poleward. C) the latitudinal temperature gradient is weakest in the hemisphere experiencing winter. D) it is difficult to explain the behavior of isotherms over the continents.
Average annual snowfall in North America:
A) in general decreases with increasing latitude. B) is very high in parts of British Columbia. C) peaks along the southern shores of Hudson Bay. D) is highest in upstate New York.
The growing human population
A) is best addressed by the conversion of ecosystems to more direct human uses. B) requires the restoration of ecosystems better designed to serve the needs of humans. C) will increase the need for ecosystem services. D) will require an increase in forests and a decrease in agricultural land.
The population of the Russian region is approximately
a. 280 million. b. 380 million. c. 180 million. d. just over 1 billion. e. 500 million.