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| If N is the population density at time t, then what would be the population density at time t+1? |
N(t+1) = N(t) + [ (B+E)-(D+I) ] N(t+1) = N(t) + [ (B+I) +(D+E) ] N(t+1) = N(t) + [ (B+I)-(D+E) ] N(t+1) = N(t) + [ (B+E) + (D+I) ] |
| N(t+1) = N(t) + [ (B+I)-(D+E) ] |
| If N = population density at time t, then population density at time t+1 can be written as N (t+1 ) = N (t) [(B+I)−(D+E)] where, B and I are natality and immigration. They add to population density. D and I are mortality and emigration. They decrease population density. |
