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Scientists have found that the existing populations of a certain species of amphibian are small in number, lacking in genetic diversity, and separated from each other by wide areas of dry land. Which of the following human actions is most likely to improve the long-term survival of the amphibians?ACloning the largest individuals to counteract the effects of aggressive predationBReducing the population size by one-fifth to decrease competition for limited resourcesCConstructing a dam and irrigation system to control floodingDBuilding ponds in the areas of dry land to promote interbreeding between the separated populations
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