Cyclic fluctuations in the number of predator and prey populations are easily explained. Usually, prey species breed faster than predators. An increase in the number of victims leads to an improvement in the nutrition of predators. Predators begin to multiply more actively, and their populations also increase. A decrease in the number of victims (infections, depletion of resources) undermines the food supply of predators, their number decreases. Repeated repetition of the described course of events generates cyclic fluctuations in both populations.
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