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How do populations of predators and prey vary in predatism?

How do populations of predators and prey vary in predatism?

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As the population predators increases initially the population of prey decreases. After sometime the decrease in the prey population and the bigger population density of predators causes the predator population to decrease. Then the prey population increases and this cycle continues. Any calamity or ecological accident leads to the disruption of predator-prey equilibrium. Predators keep the check on the proliferation of the prey population. Thus presence of predators is essential for sustaining the prey population in the ecology. Thus predatisim is fundamental for the survival of prey population.

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