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Worldwide, catches of saltwater fish have dropped as sophisticated techniques used on large ships for finding and catching these fish have resulted in a decline in the fish population. Some policy makers have assumed that “farming” fish in saltwater enclosures will compensate for this drop in the supply of fish. On the contrary, it is likely to exacerbate the problem.
Which of the following, if true, provides evidence tending to support the judgment made about exacerbating the problem?
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A. It is common to catch wild saltwater fish and use them as feed for farmed fish.
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B. The survival rate of young fish is higher in fish farms than it is in the open ocean.
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C.As the world fish catch diminishes, one consequence is that smaller fish are taken before they have had an opportunity to reproduce.
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D.Fewer hours of labor are required on fish farms than on large fishing vessels to bring the same amount of fish to market.
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E.Not all kinds of fish that are caught in the open sea can be successfully raised on fish farms.
A显示答案
