MadonnaModel Arial!D(.2> B 6:42=={Population growth in a limited environment} {Simulation control information} METHOD RK4 STARTTIME = 0 STOPTIME=50 DT = 0.02 {Initial value of population} INIT N = 2 {Population net reproduction rate} r = .1 {Carrying capacity of the environment} k = 20 {Model} N(t) = N(t - dt) + (dNdt) * dt {level of population} dNdt = r*N*(1-(N/k)) {population change is proportional to size of current population and unlimited growth rate, but is limited by the fraction of carrying capacity that is unused} } 1@rk4e !=>?333??TIMENdNdt5=E0q>BF R VZ^bf" $)&E(Y*m,.0: