Lakes or areas of the ocean that have a small supply of nutrients, and thus low productivity, are referred to as
A. autotrophic.
B. eutrophic.
C. oligotrophic.
D. mesotrophic.
E. abyssal.
Answer: C
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All of the following is true regarding shortwave radiation that reaches the earth's surface except
A) the earth's atmosphere can be heated by latent heat released through condensation, freezing, and deposition. B) heating of the atmosphere by insolation is more effective than heating of the atmosphere by land and water. C) some shortwave radiation is absorbed by ozone molecules in the stratosphere and converted to sensible heat. D) shortwave radiation is absorbed by the surface and then radiated as longwave radiation where it can later be directed downward by counterradiation.
Which one of the following is correct concerning the Panama?
A. the United States controls the Canal Zone territory, owns, and operates the Panama Canal B. Panamax is the term used to indicate the maximum size of vessels able to fit in the locks of the Panama Canal C. the Colón Free Trade Zone declared bankruptcy in 2008 and was permanently closed by the government of Panama D. Panama is Latin America's largest coca cultivator
The largest marine animals, such as the baleen whales, eat: a. secondary consumers, such as krill
b. small fish. c. primary consumers, such as copepods. d. top consumers, such as seals and large fish.
Who are the stakeholders that believe the United States should drill for oil in the Arctic National Wildlife Refuge?
A. the Russian government, the University of Alaska, and the U.S. Senate B. members of Congress, Gwich'in tribe, the Speaker of the House, and Nature Conservancy C. the Canadian government, Green Peace, and the World Wildlife Fund D. members of Congress, Inupiat Eskimos, and oil company executives