Care and proper management of the world's biomes are necessary to maintain sustainability. However, some ecosystems are in better condition than others. Which one of the following regions appears to be healthiest and best managed today?
A) Tropical forests in South America
B) Forests in the United States
C) Coral reefs throughout the world
D) Mangroves in southeast Asia
B
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In which of the following locations do winds blow slightly inward?
A. around surface low-pressure centres in the southern hemisphere B. at the poles in the northern and southern hemispheres C. around surface low-pressure centres in the northern hemisphere D. around surface low-pressure centres in the northern and southern hemispheres
What is meant by "market failure"?
a. The GDP dips below the GPI. b. Economists are forced to use contingent valuation rather than rely on direct costs and benefits. c. The national GDP drops below the level forecast by Wall Street investors. d. This occurs when markets do not take into account the environment's positive effects on economies (such as ecosystem services) or when they do not reflect the negative impacts of economic activity on people or the environment (external costs).
Geologic column is subdivided into time zones. From large internals to small intervals, the names of these time zones are:
a. Epoch, Period, Era, Eon b. Eon, Era, Period, Epoch c. Eon, Period, Era, Epoch d. Eon, Epoch, Era, Period
Unconventional (noncriteria) pollutants are characterized by all of the following except
A. they are not yet regulated by the EPA. B. they are considered particularly toxic or dangerous. C. they include mercury and organic compounds. D. they have anthropogenic sources.