How much of the fish stocks are considered to be overfished?
a. 30%
b. 50%
c. 65%
d. 80%
ANS: C
The National Marine Fisheries Service estimate that so many fish have been taken that there may not
be enough of a breeding stock left to replenish the populations of these overfished species. Information
can be found in the section Biological Resources.
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A coast that is tectonically quiescent, with little mountain-building or volcanic activity, is known as a(n) _____
a. coastline of emergence b. active-margin coast c. barrier beach d. passive-margin coast e. coastline of submergence
Mammals did not evolve until the beginning of the Cenozoic and then did so to fill an evolutionary niche left behind by the dinosaurs
Indicate whether this statement is true or false.
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What will be an ideal response?
Which of the following would be classified as a situation where a third party benefits from a market transaction by others?
A. City buying 10,000 trees for green space renewal projects. B. Increased levels of air pollution in neighborhoods near a football stadium. C. Allowing a mining company to use a natural lake to discharge waste. D. Two firms trading pollution credits to avoid cutting their toxic emissions.