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This model simulates the spread of the human immunodeficiency virus (HIV), via sexual transmission, through a small isolated human population. It therefore illustrates the effects of certain sexual practices across a population

This model explores the stability of predator-prey ecosystems and how that stability is affected when new species are introduced into the ecosystem.

This is a model of parapatric speciation.  The specific situation modeled is that of the speciation of a metal-tolerant variety of plant on the boundary between clean and contaminated ground.

This model demonstrates the ideas of competitive co-evolution. In the model there are two species: frogs and snakes. 

This is a natural/artificial selection model that shows how counterbalancing forces of natural selection from the abiotic and biotic environment and from the distribution of resources needed for survival affect the outcomes of natural selection.

This model explores the stability of consumer producer ecosystems when different initial populations of predator, prey, and producers are initialized into the model and when different numbers of invasive species are added to the model run.

It simulates the spread of an infectious disease in a semi-closed population, but with additional features such as travel, isolation, quarantine, inoculation, and links between individuals. However, we still assume that the virus does not mutate, and that upon recovery, an individual will have perfect immunity.

This is a natural/artificial selection model that shows how a population of bacteria can become more antibiotic resistant over time. The model represents an environment in a patient taking a regiment of antibiotics.

This model is a variation on the predator-prey ecosystems model Wolf-Sheep Predation.