For some predators, as prey density increases, the rate of consumption slows and eventually levels off with satiation. This is a type _____ functional response.

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Type II functional response, also called a "sigmoidal response," is characterized by an initial increase in consumption rate as prey density increases, followed by a slowing and leveling off of the consumption rate as the predator approaches satiation. This type of response is commonly observed in predators such as spiders, fish, and birds. Type I functional response (linear response) occurs when the predator's consumption rate is constant regardless of prey density, while type III functional response (accelerating response) occurs when the predator's consumption rate increases rapidly at low prey densities, levels off at intermediate densities, and then increases again at high densities, often due to aggregative prey behavior or handling time limitations. Type IV functional response (decelerating response) occurs when the predator's consumption rate slows down with increasing prey density, often due to interference among predators or cannibalism.

For Some Predators, as Prey Density Increases, the Rate of Consumption