GRE考试

【单选题】Of the following descriptions of natural processes, which suggest that the organisms involved depend on the activator-inhibitor mechanism described through Turing’s mathematics
Ⅰ. Pigeons are scattered by a random storm as they make a migration, causing their populations to live in seasonal isolation.
Ⅱ.Butterfly populations tend to grow unchecked in certain ecosystems, having few natural enemies.
Ⅲ. Lack of food tends to drive many arctic rabbit from the burrows, exposing them to their predators and thereby reducing their population.
A、Ⅰ only
B、Ⅲ only
C、Ⅰ and Ⅱ only
D、Ⅰ and Ⅲ only
E、Ⅰ, Ⅱ, and Ⅲ
网考网参考答案：B
网考网解析：
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