What is a population cycle?

Question

What is a population cycle?

Answer 1

A population cycle in zoology is a phenomenon where populations rise and fall over a predictable period of time. Because there are a number of factors which influence population change such as availability of food, predators, diseases and climate. However, there are some species where population numbers have reasonably predictable patterns of change although the full reasons for population cycles is one of the major unsolved ecological problems.