问题详情

We can infer from Dr Myers and Dr. Worm"s paper that ______.
A．the stock of large predators in some old fisheries has reduced by 90%
B．there are only half as many fisheries as there were 15 years ago
C．the catch sizes in new fisheries are only 20% of the original amount
D．the number of larger predators dropped faster in new fisheries than in the old请帮忙给出正确答案和分析，谢谢！