(01) average lifetime= 8 Units: Year (02) birth rate= 0.23 Units: 1/Year (03) births= Rabbit Population*birth rate Units: rabbit/Year (04) carrying capacity= 1000 Units: rabbit (05) deaths= (Rabbit Population/average lifetime)*effect of rabbit crowding on deaths Units: rabbit/Year (06) effect of rabbit crowding on deaths = WITH LOOKUP ( (Rabbit Population/carrying capacity), ([(0,0)-(4,2)],(0,0.9),(1,1),(2,1.2),(3,1.5),(4,2) )) Units: Dmnl (07) FINAL TIME = 30 Units: Year The final time for the simulation. (08) INITIAL TIME = 0 Units: Year The initial time for the simulation. (09) Rabbit Population= INTEG ( births-deaths, 1000) Units: rabbit (10) SAVEPER = TIME STEP Units: Year [0,?] The frequency with which output is stored. (11) TIME STEP = 0.125 Units: Year [0,?] The time step for the simulation.