If $N$ is the population density at time $t$,then its density at time $t+1$ can be calculated as . . . . . . .

  • A
    $N_{t+1} = N_t + [(B + I) - (D + E)]$
  • B
    $N_{t+1} = N_t + [(B + E) - (I + D)]$
  • C
    $N_{t+1} = N_t + [(B + D) - (I + E)]$
  • D
    $N_{t+1} = N_t + [(I + E) - (B + D)]$

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