After DDT had been used for a period of time, it began to accumulate in the bodies of top carnivores.
DDT's destructive effect on the aquatic environment has been thoroughly reviwed.
Because of it's low solubility, it has a greater rate of bioaccumulation in water, and thus poses a significant long-term threat to aquatic wildlife.
Thus, option "B" is correct, it began to accumulate in the bodies of top carnivores.
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