Which of the following is a synthetic greenhouse gas?
A) water vapor
B) methane
C) oxygen
D) nitrogen
E) chlorofluorocarbons
Answer: E
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It has been proposed that the reason that the Pacific Ocean has many more coral reefs than the Atlantic Ocean is that
A) the Atlantic Ocean is too saline for many coral species. B) the ocean currents in the Atlantic are too swift to allow for coral reefs to develop unimpeded. C) the last glacial advance left the Atlantic too cold to allow coral to survive. D) there are too many large rivers discharging polluted waters into the Atlantic basin to support as many coral reefs as in the Pacific, which is much larger and more immune to the pollution.
In the South in 2011, ________ percent of whites lived in poverty
A) 9.9 B) 10.4 C) 24.7 D) 26.7
Seamounts and abyssal hills are ________ in origin
A) erosional B) metamorphic C) sedimentary D) volcanic E) seismic
Some of the leading ecotourism destinations include:
A. Costa Rica and Panama in Central America B. Malaysia and the Galapagos Islands C. the Serengeti in Tanzania; the Amazon rain forests D. the Caribbean, New Zealand and all of the above