An increase in a predator population will directly result in THE DECREASE IN THE PREY POPULATION.
Predation is a biological interaction where one organism feed over another organism and the other organism is harmed. The organism benefited is called predator while the one harmed is called prey. Predator is generally bigger in size than the prey. If the population of predator is increasing it will lead to the decrease in the population of prey as more predators will feed on the prey.