单项选择题

    Researchers have noted that ants arrange their dead using the same principles thought to produce the markings on animal skin and on tropical sea shells, a first clear example of so-called Turing patterns in higher organisms.Line Turing argued that activation occurs through a feedback process that amplifies(5) small variations in the concentration of one of the ingredients, while inhibition causes a concentration of activity to suppress the appearance of similar concentrations nearby. Ant graveyards are an example of a self-amplifying activation process: ants are more likely to drop a corpse on a pile than elsewhere, and because collecting bodies and adding them to a pile sweeps the(10) surrounding space clear, new cemeteries are inhibited from appearing in the vicinity of existing ones. While activator-inhibitor mechanisms have previously been proposed to explain how predators and prey distribute themselves across an ecosystem, it is the first time such a system has conclusively proven that Turing’s process operates at the level of colonies and ecosystems.

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.