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题目材料：

Which of the following, if true, would call into question Hardy's principle of animal exclusion?

A.Zooplankton are not the only organisms that are affected by phytoplankton repellents.
B.Zooplankton exclusion is unrelated to phytoplankton population density.
C.Zooplankton population density is higher during some parts of the year than during others.
D.Net phytoplankton are more likely to exclude zooplankton than are nannoplankton.
E.Phytoplankton numbers can be strongly affected by environmental factors.

B显示答案

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以上解析由考满分老师提供。