This model shows the growth of the human population in Markham. The initial number of population is set to 350k, and the model assumes that the capacity is 500k. The model's purpose is to show how population growth can actually slow down as a population approaches its carrying capacity.
The nHumans stock represents the number of people living in Markham and is measured in people. Human Births is an inflow into the population number and is measured in people per year. The rate depends on the current population, the human birth rate, and the remaining capacity for population growth. Human deaths are an outflow from the population stock and are measured in people per year; this depends on the current population and the human death rate.
Human birth rate and human death rate are both variables measured in 1 per year. The carrying capacity is a variable also measured in people and represents the approximate population limit used in this simplified model. My model is a simplified representation of logistic population growth and doesn't currently account for immigration or changes in birth and death rates.
